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Plato

Covered in the vault’s survey histories

These volumes’ chapter headings already link to this note; these are the return links.

Evans — A History of Western Philosophy

Adamson — Classical Philosophy

Life

  • actual name was Aristocles
  • He was a member of an aristocratic and influential family.
  • His mother was Perictione, descendant of Solon, a statesman credited with laying the foundations of Athenian democracy.
  • At 40, he founded a school of philosophy, the Academy.
  • Plato almost faced death, but was sold into slavery. Anniceris, a Cyrenaic philosopher, bought Plato’s freedom for twenty minas,and sent him home. Philodemus however states that Plato was sold as a slave as early as in 404 BC, when the Spartans conquered Aegina, or, alternatively, in 399 BC, immediately after the death of Socrates.

Impact on Philosophy

Concepts

  • Plato never speaks in his own voice in his dialogues; every dialogue except the [Laws](https://en.wikipedia.org/wiki/Laws(dialogue) “Laws (dialogue)”) features Socrates, although many dialogues, including the Timaeus and Statesman_, feature him speaking only rarely.
  • Although Socrates influenced Plato directly, the influence of Pythagoras, or in a broader sense, the Pythagoreans, such as Archytas also appears to have been significant. Aristotle and Cicero both claimed that the philosophy of Plato closely followed the teachings of the Pythagoreans According to R. M. Hare, this influence consists of three points:
    1. The platonic Republic might be related to the idea of “a tightly organized community of like-minded thinkers”, like the one established by Pythagoras in Croton.
    2. The idea that mathematics and, generally speaking, abstract thinking is a secure basis for philosophical thinking as well as “for substantial theses in science and morals”.
    3. They shared a “mystical approach to the soul and its place in the material world”.44(https://en.wikipedia.org/wiki/Plato#cite_note-51)[[45]](https://en.wikipedia.org/wiki/Plato#cite_note-:1-52)

The Forms

  • Aristotle suggests that Socrates’ idea of forms can be discovered through investigation of the natural world, unlike Plato’s Forms that exist beyond and outside the ordinary range of human understanding.
  • Theory of forms - Wikipedia
  • The theory suggests that the physical world is not as real or true as “Forms”. According to this theory, Forms—conventionally capitalized and also commonly translated as “Ideas”—are the non-physical, timeless, absolute, and unchangeable essences of all things, of which objects and matter in the physical world are merely imitations.

The Soul

  • For Plato, as was characteristic of ancient Greek philosophy, the soul was that which gave life. Plato advocates a belief in the immortality of the soul, and several dialogues end with long speeches imagining the afterlife. In the Timaeus, Socrates locates the parts of the soul within the human body: Reason is located in the head, spirit in the top third of the torso, and the appetite in the middle third of the torso, down to the navel.
  • Plato evinces a belief in the theory of reincarnation in multiple dialogues

Epistemology

  • Reality is unavailable to those who use their senses. Socrates says that he who sees with his eyes is blind. While most people take the objects of their senses to be real if anything is, Socrates is contemptuous of people who think that something has to be graspable in the hands to be real.
  • Many have interpreted Plato as stating – even having been the first to write – that knowledge is justified true belief, an influential view that informed future developments in epistemology. Plato also identified problems with the justified true belief definition in the Theaetetus, concluding that justification (or an “account”) would require knowledge of difference, meaning that the definition of knowledge is circular.

Ethics

  • Euthyphro dilemma - Wikipedia
    • “Is the pious (τὸ ὅσιον) loved by the gods because it is pious, or is it pious because it is loved by the gods?”
  • In the Protagoras dialogue it is argued through Socrates that virtue is innate and cannot be learned, that no one does bad on purpose, and to know what is good results in doing what is good; that knowledge is virtue.
  • In the Republic, Plato poses the question, “What is justice?” and by examining both individual justice and the justice that informs societies, Plato is able not only to inform metaphysics, but also ethics and politics with the question: “What is the basis of moral and social obligation?” Plato’s well-known answer rests upon the fundamental responsibility to seek wisdom, wisdom which leads to an understanding of the Form of the Good. Plato views “The Good” as the supreme Form, somehow existing even “beyond being”. In this manner, justice is obtained when knowledge of how to fulfill one’s moral and political function in society is put into practice.

Justice

Justice as an ontological hierarchy in the soul (Book IV, 435e–444e)

Plato introduces a tripartite psyche:

Part of the soulCharacteristic excellenceProper subordinate relation
Reason (logos)Wisdom, calculationShould rule
Spirit (thumos)Courage, righteous angerAlly of reason, enforces its commands
Appetite (epithumia)Desires for food, sex, moneyObeys reason, moderated by spirit

Justice is internal harmony: each part “does its own work and does not meddle in the business of the others” (433a–434c). Injustice is civil war within the psyche—appetite or spirit usurping reason—mirroring the civic disorder in a tyrannical state. Thus the moral order is a hierarchy of being itself: rational order > spirited energy > appetitive drive.

Plato on men and women (Book V, 449a–457c)

Key claim. “There is no practice of the guardians relevant to city-management that belongs to a woman because she is a woman or to a man because he is a man; natural talents are scattered alike among both” (456a–b).
Details

  1. Same education and gymnastics (451e–452a). Female guardians train naked alongside men—shocking to convention but logical if bodies are instruments of the soul’s excellence.
  2. Merit-based assignment (454c–455d). Some women will prove philosophers, others auxiliaries, most producers—mirroring the distribution among men.
  3. Acknowledged physical difference (453b–c). On average women are “weaker” in strength, but this is no more relevant to ruling than the fact that some men are weaker than others.
  4. Political consequence. In the guardian strata, Plato thus anticipates near-equality: mixed military units, shared governance, and communal child-rearing. He does not extend this full equality to producers, whose lives remain governed by economic necessity.

History of Political Philosophy - Leo Strauss - Plato

Plato

The Republic: The Ideal City and the Nature of Justice

The Republic explores the nature of justice through the construction of an ideal city in speech. The dialogue begins by refuting common opinions on justice, such as Kephalos’ view that it is telling the truth and paying debts, and Polemarchos’ view that it is helping friends and harming enemies. These refutations lead to the radical proposals of the ideal city: absolute communism (abolition of private property and the family) for the guardian class and the rule of philosophers who possess true knowledge.

A central concept is the “one man one job” principle, where each person performs the societal role for which they are naturally suited. This leads to a society structured into three classes: rulers (philosophers), warriors (guardians), and the money-making class. Justice in the city is achieved when each class performs its function well and minds its own business.

This structure of the city is paralleled in the individual soul, which is composed of three parts: reason, spiritedness, and desire. A just individual is one in whom reason, aided by spiritedness, rules over the desires. Therefore, true justice is the health of the soul, making it desirable for its own sake, regardless of rewards or reputation.

The realization of this just city is deemed highly improbable, as it would require philosophers to become kings or kings to become philosophers. Philosophers are naturally reluctant to rule, preferring the pursuit of knowledge in the intelligible realm of “ideas” to the “cave” of political life. The dialogue abstracts from certain human elements like eros (love or desire), which is presented as potentially disruptive to the city’s order.

The Statesman: The Science of Ruling

The Statesman aims to define the nature of the true ruler or “kingly man.” It employs a method of “dialectics” or division to distinguish the statesman’s art from other arts. Initially, the statesman is compared to a shepherd of the human herd, but this is corrected by a myth explaining that unlike divine shepherds of a past age, human rulers are of the same species as the ruled.

A key argument in the Statesman is the superiority of the rule of a wise man over the rule of law. Laws are general and cannot account for the complexity and variability of individual circumstances. The true statesman, possessing knowledge, should be able to act outside the law for the good of the city, much like a physician can deviate from standard procedures to heal a patient.

However, the dialogue acknowledges that such a wise ruler is rarely, if ever, available. Due to the inability of the populace to trust or recognize true wisdom, and the lack of a clear, god-like superiority in any human, the rule of law becomes a necessary “second best.” In the absence of a true king, law-abiding regimes are preferable to lawless ones. The statesman’s primary task is described as a form of “weaving,” creating a harmonious social fabric by uniting different virtuous characters, particularly the courageous and the moderate.

The Laws: The Best Possible City

The Laws is Plato’s most practical political work, presenting a more attainable best regime than the one in the Republic. Socrates is absent from this dialogue, and the conversation is led by an Athenian Stranger who discusses the creation of a new colony with a Cretan and a Spartan.

This dialogue moves away from the ideal of a philosopher-king and accepts the necessity of the rule of law as the foundation of the political order. The goal of legislation is to cultivate virtue in the citizenry, with a focus on peace rather than war. The laws should include preambles to persuade citizens of their rightness, combining coercion with consent.

The regime proposed in the Laws is a mixed constitution, blending elements of monarchy (wisdom) and democracy (freedom). It abandons the communism of the Republic in favor of a system of private property with strict regulations to limit wealth inequality. Citizenship is tied to property qualifications, effectively creating an aristocracy.

A central institution for the preservation of this regime is the “Nocturnal Council,” a body of wise, elderly citizens tasked with studying the laws and philosophy to ensure the city’s stability and adherence to its founding principles. This council represents a move back toward the ideal of the Republic, suggesting that even the most practical city requires a link to philosophical wisdom for its long-term salvation. The Laws also contains Plato’s only demonstration of the existence of the gods, presented as a necessary prelude to the legal code to combat impiety.

PDF pp.Main ideasKey details & examples
45-47Why Plato writes in dialogues & why politics is always in viewPlato never speaks in his own voice; the dramas are monuments to Socrates. All thirty-five dialogues circle back to the political question, but only Republic, Statesman, Laws are overtly political.
47-50Opening of the Republic – three defective views of justiceKephalos (justice = pay debts); Polemarchos (help friends/harm enemies); Thrasymachos (advantage of the stronger). Each, once probed, points toward radical political conclusions: communism, patriotism, and “craft” rule.
50-66Building the model city (“healthy”, “luxurious”, “guardian” stages)From innocent barter city to feverish luxury, then to the armed camp ruled by specially educated guardians. Principles: “one man – one job”, communism of property for the warrior class, music-gymnastic education, equality of the sexes.
66-73Communism of women & children; equality of the sexesAbsolute family abolition is justified because only the useful is truly noble; eros is subordinated to civic good. Socrates asks whether such communism is possible and desirable.
73-85Philosopher-kings and the doctrine of IdeasThe city in speech can exist only if philosophy and political power coincide, yet philosophers are reluctant to rule. Justice itself is an eternal Form; the ideal city is an image that can be only approximated.
85-88Justice defined as the health of the soul—its limitsA soul is just when reason rules spiritedness and desire. Only philosophers fully achieve this; others obey from habituation. The Republic lays bare the limits of the city.
88-96The Statesman: from founding a city to defining true ruleDialogue shifts to a mathematical “division” that seeks the kingly art. Myth of Kronos shows why divine communism is impossible; post-divine humanity must live under law. The genuine statesman “weaves” gentle and manly citizens, securing a lawful mean.
96-104The Laws: the best achievable regimeWith Socrates absent, an Athenian Stranger designs a mixed polity—part oligarchic, part democratic—ruled by law rather than wisdom alone. Key devices: moderate property ceilings (4:1 wealth ratio), rigorous civic education (music & drinking-party tests), proof of divine providence against atheism, a Nocturnal Council of the wise to guard and amend the code. Communism is dropped as impracticable, but law is fortified with rational preludes that persuade free men.

How the three dialogues fit together

  1. Republic gives the model city to expose both the highest human need (philosophic rule) and the natural limits of politics.
  2. Statesman makes the limit explicit: after the gods withdraw, the best attainable order is law, not naked wisdom; absolute communism is impossible.
  3. Laws sketches that second-best order: a rigorously law-bound, mixed regime anchored in education, piety, and continuous legislative oversight.

Note on pagination: Page references are to the PDF’s printed page numbers (Strauss & Cropsey, 3rd ed.), which run continuously from 45 through 104 for this chapter.

Link to original

Books/Chapters

Plato - The Republic Notes

Euthyphro

The main gist of Plato’s Euthyphro is a debate about the definition of “piety” (or holiness) and the relationship between morality and religion.
In simple terms, it is a story about Socrates trying to find a universal standard for “goodness,” rather than just a list of good actions.
Here is the breakdown of the dialogue:

1. The Setup

Socrates meets a religious expert named Euthyphro outside the courthouse.

  • Socrates is there because he is being charged with “impiety” (disrespecting the gods/corrupting youth).
  • Euthyphro is there to prosecute his own father for murder, believing this is the “pious” (holy) thing to do, even though it shocks everyone else.
    Since Euthyphro claims to be an expert on what is holy, Socrates asks him to teach him the definition of Piety so he can use it to save himself in court.

2. The Problem with Examples

Every time Socrates asks “What is piety?”, Euthyphro gives him an example (like “Prosecuting my father is pious”).
Socrates gets frustrated. He explains that he doesn’t want examples; he wants the definition (the “Form”). He wants to know the one characteristic that makes all pious actions pious.

The Lesson: You cannot define a concept just by listing examples of it. You need to find the underlying rule.

3. The Euthyphro Dilemma

Eventually, Euthyphro argues that piety is “what all the gods love.” This leads to one of the most famous questions in the history of philosophy, known as the Euthyphro Dilemma.
Misc/Documents/9ec640f9d7685d9e0b571fb5ab925e71_MD5.jpg

Socrates asks: “Is the pious loved by the gods because it is pious, or is it pious because it is loved by the gods?”
This breaks down into two difficult options:

  • Option A (It is pious because the gods love it): This means morality is arbitrary. If the gods decided tomorrow that murder was “pious,” then murder would be good. There is no standard other than the gods’ whim.
  • Option B (The gods love it because it is pious): This means that “goodness” exists above the gods. The gods are just recognizing what is already good. If this is true, we don’t strictly need the gods to understand morality; we just need to understand the standard they use.

4. The Ending

Euthyphro cannot answer this question. He gets frustrated, makes an excuse that he is late for an appointment, and runs away.
The Conclusion: The dialogue ends in aporia (a state of puzzlement). They never find the definition of piety. The main takeaway is that doing something just because “religious authority says so” is not a solid logical foundation for morality.

This is arguably the most famous question in ethics because it forces us to decide where “goodness” actually comes from.
Here is the dilemma in detail, followed by a modern, relatable example.

The Core Question

Socrates asks: “Is the good thing ‘good’ because God loves it? OR does God love it because it is ‘good’?”
Imagine two paths:
Path A: It is good because God loves it.

  • The Logic: “Good” is just a label for “whatever God wants.”
  • The Consequence: Morality is arbitrary. If God (or the authority) decided tomorrow that kicking puppies was “good,” then kicking puppies would instantly become the moral thing to do. There is no standard other than the authority’s whim.
    Path B: God loves it because it is already good.
  • The Logic: God looks at the world, sees what is inherently valuable (like kindness), and tells us to do that.
  • The Consequence: God is not the creator of morality; He is just the messenger. There is a standard of “goodness” that exists above God, which limits His power (He can’t command evil, because evil is real and separate from Him).

Modern Example: The “Just Law” vs. “The Rulebook”

The best modern parallel is the difference between Legality (what the State says) and Justice (what is actually right).
Imagine a government passes a new law: “It is now illegal to help a drowning person.”
The “Euthyphro” question applied to this law:

“Is this action ‘wrong’ simply because the Government (the authority) forbade it? Or is the Government forbidding it because it is actually wrong?”

Applying the Two Paths:

1. The “Authority” View (Divine Command Theory / Legal Positivism)

  • If you believe “Good = What the Authority Says,” then yes, helping the drowning person is now morally “wrong.”
  • Why? Because the Authority creates the rules. If the law says “don’t do it,” then doing it is bad. Period.
  • The Danger: This justifies atrocities. “I was just following orders” is the ultimate defense here. If the law says to hurt people, hurting people is “right.”
    2. The “Independent Standard” View (Natural Law / Moral Realism)
  • If you believe “Good = An Independent Reality,” then you say: “No. The government is wrong.”
  • Why? Because saving a life is objectively “good” regardless of what the law says. The law is trying to define morality, but it failed.
  • The Consequence: You are admitting that the Government is not the ultimate source of right and wrong. You are judging the Authority by a higher standard (Human Rights/Justice).

Why this matters today

We use the “Euthyphro Dilemma” every time we criticize a leader or a law.
If you say, “That law is unjust,” you are taking Socrates’ side. You are saying that “Justice” is something real and separate that exists on its own, and that even the highest authorities (Presidents, Kings, or Gods) can be wrong if they don’t measure up to it.

References

Can Atheism and Reason Ground Morality?
Countering Presuppositional Apologetics
Debating Objective Morality by God
Parker vs Jay Dyer on Subjectivity
Logic without God
Objective Moral Argument
Philosophical Foundations for Morality and Their Thinkers
Presuppositional apologetics
Rights
Secular Morality
The Foundations of Morality - Intuition, Justification, and Infinite Regress
Transcendental Argument for God

Crito

Here is the chronological summary of Plato’s Crito.
While The Apology was about Socrates’ public defense, Crito is a private conversation about political obligation and the nature of justice. It takes place in Socrates’ prison cell about a month after the trial, just days before his execution.

1. The Setting: Early Morning in Prison

Crito, a wealthy friend of Socrates, arrives at the prison before dawn. He finds Socrates sleeping peacefully. Crito reveals the bad news: the ship from Delos (whose arrival marks the end of the stay of execution) will arrive today. Socrates must die tomorrow.
Socrates shares a dream he just had: A woman in white told him he would reach “fertile Phthia” (a reference to Achilles’ home in the Iliad) in three days, suggesting a delay in the ship’s arrival.

2. Crito’s Argument for Escape

Crito urges Socrates to escape. The guards have been bribed, and plans are set. Crito offers four main arguments for why Socrates must leave:

  • Reputation (The Friends): If Socrates dies, people will think his friends were too cheap or cowardly to save him. “People who do not know us… will think I did not care.”
  • The Children: Socrates is abandoning his sons, leaving them as orphans when he could raise and educate them.
  • Aiding Enemies: By staying, Socrates is doing exactly what his enemies want (killing himself). This is not justice; it is giving in to wickedness.
  • Practicality: Money is not an issue, and Crito has friends in Thessaly who will protect Socrates.

3. Socrates’ Preliminary Refutation

Socrates dismantles Crito’s reliance on Public Opinion.

  • The Gymnast Analogy: Just as an athlete listens only to his doctor/trainer and ignores the crowd, a moral man should listen only to the Expert on Truth, not the majority.
  • The Soul: The body is less important than the soul. Living is not the goal; living well (justly) is the goal.
  • The Principle: One must never do wrong, even when wronged. Retaliation is not just. Therefore, if escaping is “wrong,” Socrates cannot do it, even if the city wronged him first.

4. The Speech of the Laws of Athens

To determine if escaping is wrong, Socrates personifies the Laws of Athens and imagines them interrogating him. This section contains one of the earliest formulations of Social Contract Theory.
The Laws present three main arguments against escape:

A. The Parent/Master Argument

The Laws argue they are responsible for Socrates’ very existence. They sanctioned the marriage of his parents and mandated his education.

  • The Logic: You do not have equal rights with your father or master to strike back if they strike you. Since the Laws are even more sacred than a father, Socrates cannot destroy the Laws just because they are trying to destroy him.

B. The Agreement (Social Contract)

Socrates has lived in Athens for 70 years. He saw how the laws worked. He never chose to emigrate to Sparta or Crete.

  • The Logic: By remaining in the city as an adult, raising children there, and accepting the benefits of citizenship, he tacitly agreed to obey the Laws. To break them now, just because the verdict went against him, would be a betrayal of a contract.

C. “Persuade or Obey”

The Laws remind Socrates of the democratic nature of the system. The command was not absolute; the citizen has two choices:

  1. Persuade the state that the law is wrong (change it).
  2. Obey the law.
    Socrates failed to persuade the jury (in The Apology). Therefore, he must obey the punishment. Escaping now would be physically destroying the authority of the Laws.

5. Conclusion

Socrates tells Crito that the voice of the Laws rings so loudly in his head that he cannot hear anything else. He compares it to the flute music heard by religious mystics.
Crito admits defeat: “I have nothing to say, Socrates.”
Socrates decides to stay and face execution, prioritizing the health of his soul and his agreement with the state over his physical life.

Phaedo

Here is the chronological summary of Plato’s Phaedo.
This dialogue depicts the final hours of Socrates’ life and his execution. While The Apology was about the law and Crito_was about duty, _Phaedo is about the nature of the soul and the afterlife.
The text is a “frame story”: a character named Phaedo is retelling the events to a friend named Echecrates in a different city weeks later.

1. The Morning: The Gathering

The friends of Socrates arrive at the prison early in the morning. The chains are finally removed from Socrates’ legs.

  • Xanthippe: Socrates’ wife is there with their youngest child. She is weeping, exclaiming, “This is the last time you will converse with your friends!” Socrates, finding the emotion distracting, asks Crito to have someone take her home. She is led away screaming.
  • Pleasure and Pain: Socrates rubs his sore legs where the chains were. He muses on how strange it is that pleasure and pain are inseparable; the pain of the chains is immediately followed by the pleasure of release.

2. The Definition of Philosophy

The friends ask why Socrates is so calm about dying. Socrates defines Philosophy as “The practice of dying.”

  • The Logic: The body is a distraction. It demands food, sex, and sleep, and its senses (sight/hearing) are often deceptive.
  • The Goal: Knowledge constitutes grasping the pure “Forms” (Truth, Beauty, Goodness). Only the Soul can see these. Since death is the separation of the Soul from the Body, the philosopher has been trying to detach his soul from his body his whole life. Therefore, death is just the final achievement of what he has been practicing.

3. The Arguments for Immortality

Two friends, Simmias and Cebes, fear that the soul might dissipate like smoke/breath when the body dies. Socrates offers four arguments to prove the soul survives.
A. The Argument from Opposites (The Cycle)
Nature operates in circles. Sleep comes from waking; waking comes from sleeping. Cold comes from hot. Therefore, Life must come from Death, and Death from Life. If this cycle stopped, everything would eventually be dead.
B. The Theory of Recollection
We have concepts of “Absolute Equality” or “Perfect Beauty.” We have never seen these things on earth (two sticks are never perfectly equal).

  • Conclusion: We must have learned these standards before we were born. Therefore, the soul existed before the body.
    C. The Argument from Affinity
    There are two types of things:
  1. Composite/Visible: Things made of parts (like the body). These can be broken apart and destroyed.
  2. Simple/Invisible: Things that are one uniform essence (like the Forms or the Gods). These cannot be broken.
  • Conclusion: The Soul resembles the Invisible/Divine. The Body resembles the Visible/Mortal. Therefore, the soul is indestructible.

4. The Objections (The Crisis)

The mood darkens as Simmias and Cebes raise powerful objections:

  • Simmias (The Harmony Attunement): A lyre (instrument) creates harmony. Harmony is invisible and divine. But if you smash the lyre, the harmony vanishes. If the soul is just the “harmony” of the body’s chemicals, it dies when the body breaks.
  • Cebes (The Weaver): A weaver outlasts many coats, but eventually, he dies in his last coat. The soul might outlast many bodies (reincarnation), but eventually, it might wear out and perish.
    The room falls into despair. Socrates pauses to warn them against “Misology” (the hatred of arguments/reason). He urges them not to give up on logic just because a specific argument failed.

5. The Final Argument: The Forms

Socrates answers the objections with his strongest proof.

  • Attributes exist because they participate in Forms (e.g., Fire is hot because it holds the form of Heat).
  • The Soul is what brings Life to the body.
  • Life is the opposite of Death.
  • A Form cannot admit its opposite (Snow cannot accept Heat and remain Snow; it must melt or flee).
  • Therefore, the Soul (which is Life-bringer) cannot admit Death. It is effectively “Deathless” (Immortal).

6. The Myth of the Afterlife

Confident in his survival, Socrates describes the geography of the Earth and the Underworld.

  • He describes the rivers of Hades: Acheron (for the average), Pyriphlegethon (fire, for parent-abusers), and Cocytus (ice, for murderers).
  • He explains that those who lived as philosophers are freed from these regions to live in a “pure dwelling place” above the sky.

7. The Death Scene

The sun begins to set.

  • The Bath: Socrates goes to bathe so the women won’t have to wash his corpse.
  • The Poison: The executioner brings the cup of Hemlock. He weeps, calling Socrates the “noblest and gentlest” man he has ever met.
  • Drinking: Socrates prays and drinks the poison cheerfully, without hesitation.
  • The Reaction: The friends break down weeping. Socrates scolds them: “What is this strange outcry? I sent away the women mainly in order that they might not offend in this way, for I have heard that a man should die in peace. Be quiet and have patience.”
  • The Numbness: He walks around until his legs feel heavy, then lies down. The coldness creeps up his body from his feet to his heart.
    The Final Words
    Just before he dies, Socrates uncovers his face and speaks to Crito:

    “Crito, we owe a rooster to Asclepius. Please, don’t forget to pay the debt.”
    (Note: Asclepius is the god of healing. Socrates is implying that death is the “cure” for the illness of life).
    Crito asks if there is anything else. Socrates does not answer. He shudders, and his eyes fix. Crito closes his mouth and eyes.

This concludes the trial and death cycle of Socrates.

Symposium

I. Frame Narrative & Setting – Apollodorus, Aristodemus, and the Banquet

Stephanus: 172a–174a
What happens

  • Apollodorus narrates events that took place years earlier at Agathon’s house.
  • He’s retelling what he heard from Aristodemus, who was actually there.
  • Occasion: a party celebrating Agathon’s victory as a tragic poet.
  • The guests decide that instead of heavy drinking they’ll each give a speech in praise of Eros (Love).
    Watch for
  • Layered storytelling (you → Apollodorus → Aristodemus → the party).
  • Apollodorus’ personality: devoted to Socrates, disdainful of “normal” life.
  • How philosophy is embedded in a very human, social scene.

II. Phaedrus’ Speech – Love as Ancient and Heroic

Stephanus: 178a–180b
Core ideas

  • Love is one of the most ancient gods.
  • Lovers are ashamed to act basely in front of one another → love fosters:
    • Courage
    • Noble self-sacrifice
  • Examples:
    • Alcestis dying for Admetus.
    • Achilles choosing death out of love for Patroclus.
      Watch for
  • Focus on honor, shame, and courage, not analysis of what love “is.”
  • Love as a source of heroic virtue, especially in war and death.

III. Pausanias’ Speech – Common vs. Heavenly Love

Stephanus: 180c–185c
Core ideas

  • Two Aphrodites → two Loves:
    • Common Love (Pandemian)
      • Aimed at bodies and pleasure.
      • Indiscriminate, often morally base.
    • Heavenly Love (Uranian)
      • Aimed at the soul and at virtue.
      • Involves long-term, educative relationships.
  • Love isn’t good or bad in itself; its goodness depends on how and for what it is practiced.
  • Social customs and laws about relationships reflect a city’s morality about love.
    Watch for
  • Value distinction: lust vs. noble love.
  • Early move from “love makes us brave” to “what kind of love is morally good?”

IV. Eryximachus’ Speech – Love as a Principle of Harmony in Nature

Stephanus: 185e–188e
Core ideas

  • Extends Pausanias’ “good vs bad love” to the entire cosmos.
  • In the body (medicine):
    • Health = harmonious cooperation of opposites (hot/cold, wet/dry) = “good love.”
    • Disease = disharmony = “bad love.”
  • In music (harmony) and seasons / weather:
    • Balance and order are manifestations of love.
  • Doctors, musicians, and priests manage love by guiding these harmonies.
    Watch for
  • Love becomes a cosmic (almost scientific) principle.
  • Question whether “love” here is literal or more like a metaphor for balance/order.

V. Aristophanes’ Speech – The Myth of the Split Humans

Stephanus: 189c–193d
Core ideas

  • Originally humans were spherical beings, doubled:
    • Three types: male–male, female–female, male–female.
    • Powerful and arrogant, they challenged the gods.
  • Zeus split them in half to weaken them.
  • Ever since, each half seeks its missing other half:
    • Explains different sexual orientations.
    • Love is a longing to be “whole” again.
  • The highest wish of lovers is to be united so completely they become one being.
    Watch for
  • A comic myth that’s also psychologically deep:
    • Love as lack and yearning for completion.
  • Sets up later philosophical talk about desire as lack.

VI. Agathon’s Speech – Love as the Young, Beautiful, Virtuous God

Stephanus: 194e–197e
Core ideas

  • Agathon focuses on Love’s nature, not just its effects.
  • Love is:
    • The youngest god, never associated with ugliness or old age.
    • Delicate, beautiful, living among flowers and soft places.
    • Just, moderate, courageous, and wise.
  • Love is the source of all virtue and all good things, in gods and humans.
    Watch for
  • Highly rhetorical, poetic, polished.
  • Love is described as already perfect and beautiful, not needy.
  • Note the contrast when Socrates starts questioning Agathon’s assumptions right after.

VII. Socrates’ / Diotima’s Speech – The Nature, Aim, and Ascent of Love

(This whole stretch is the philosophical heart of the dialogue.)
Stephanus: 198a–212c

VII.a. Socrates Cross-Examines Agathon

Stephanus: 198a–201c
Core ideas

  • Socrates asks whether love is always love of something.
  • We only desire what we do not already fully have.
  • If love is of beauty and goodness, then Love himself cannot already be perfectly beautiful and good in the way Agathon said.
  • Conclusion: love is in a state of lack relative to beauty and goodness.
    Watch for
  • Classic Socratic elenchus: step-by-step questions exposing contradictions.
  • Key insight: Desire presupposes deficiency.

VII.b. Diotima’s Ontology of Love – Love as Daimon

Stephanus: 201d–204c
Core ideas

  • Socrates reports teachings he received from Diotima, a wise woman from Mantinea.
  • Love is not a god, but a daemon (intermediary spirit) between gods and humans.
  • Myth of Love’s parentage:
    • Poros (Resource) and Penia (Poverty) at a banquet of the gods.
    • Love inherits poverty (always needy) and resourcefulness (clever, persistent).
  • Love is always in-between:
    • Not wise, but a lover of wisdom (philosopher).
    • Not mortal, not immortal: continually renewed.
      Watch for
  • “In-between” status of love mirrors the role of philosophy: a permanent seeker.

VII.c. What Love Ultimately Wants – Immortality and “Birth in Beauty”

Stephanus: 204c–209e
Core ideas

  • All humans desire:
    • To possess the good forever → immortality.
  • Love = the drive to give birth in beauty, in body or soul:
    1. Physical procreation
      • Children as a way to share in immortality.
    2. Spiritual / intellectual procreation
      • Giving birth to virtues, laws, artworks, scientific discoveries, reforms.
  • Great lawgivers, poets, and teachers are “pregnant in soul” and seek beautiful minds to “give birth” to noble deeds and ideas.
    Watch for
  • Love recast from romance to creative and civic energy.
  • Think of “legacy” — how people strive to leave something that endures beyond their life.

VII.d. The “Ladder of Love” – Ascent to the Form of Beauty

Stephanus: 210a–212b
Stages

  1. One beautiful body
    • Initial attraction to a single person’s physical beauty.
  2. All beautiful bodies
    • Recognizing that beauty in any body is of the same kind.
  3. Beautiful souls
    • Turning attention from bodies to the character and mind of people.
  4. Beautiful practices and laws
    • Loving good institutions, customs, ways of life that produce virtue.
  5. Beautiful knowledge
    • Love of wisdom and philosophy itself.
  6. Beauty Itself (the Form of Beauty)
    • Eternal, unchanging, non-physical Beauty.
    • Contemplation of this produces true virtue and a godlike, blessed life.
      Watch for
  • The ladder moves from particular → general → abstract → the Form.
  • This is Plato’s vision of erotic desire as a path to metaphysics and ethics.
  • Question for yourself: how does attachment to particular people fit into this picture?

VIII. Alcibiades’ Speech – A Drunken Portrait of Socrates

Stephanus: 212c–222b
Core ideas

  • Alcibiades bursts in drunk, crowned with ivy, and hijacks the proceedings.
  • Instead of praising Love, he praises Socrates as the personification of Eros.
  • He compares Socrates to:
    • A Silenus statue: ugly outside, divine figures inside.
    • A Marsyas-like figure whose words (like music) enchant listeners.
  • Stories:
    • His attempts to seduce Socrates sexually; Socrates’ refusal and self-control.
    • Socrates’ bravery and endurance in war (Potidaea, Delium).
    • Socrates’ indifference to cold, hunger, drink, and conventional honors.
      Watch for
  • Alcibiades as the failed or incomplete lover:
    • He’s stuck on the particular person of Socrates; he hasn’t climbed the full ladder.
  • Socrates as one who channels love toward truth and virtue, not bodily gratification.
  • This dramatic narrative “confirms” Diotima’s philosophical account in lived form.

IX. Closing Scene – Socrates Awake at Dawn

Stephanus: 222c–223d
What happens

  • The drinking continues; people pass out one by one.
  • Socrates calmly keeps talking (about good poets, tragedy and comedy) until everyone else falls asleep.
  • At dawn he leaves, as usual, to go about his day—unaffected.
    Watch for
  • Visual image of Socrates:
    • Physically and mentally tireless.
    • At home in drink, war, love, and argument—but ruled by reason.
  • The contrast between all the glamorous speeches about love and Socrates’ lived way of being moved by love of wisdom.

Here are ten of the most widely quoted lines/themes from Symposium, with speaker, a short “quote-sized” formulation, and the standard Stephanus reference so you can line them up with any edition you’re reading.

I’ve focused on the passages that show up again and again in quote collections, scholarship, and popular culture. (Goodreads)

Most Quoted

1. The “soulmate” myth – humans split in two

  • Speaker: Aristophanes
  • Key line (short form):

    Humans were once whole, double beings; Zeus split us, and we spend life seeking our other half.

  • Location: 189e–190b
  • Why it’s famous: This is the origin of the very modern idea of “soulmates.” The meme version (“four arms, four legs, two faces…”) is a loose paraphrase of this passage, not a literal line from the Greek. (Project Gutenberg)

2. Love “heals the wound of human nature”

  • Speaker: Aristophanes
  • Key line (short form):

    “Love is born into every human being; it calls back the halves of our original nature together…”

  • Location: 191d (premieretat.com)
  • Why it’s famous: This is Aristophanes’ explicit definition of love as the force trying to make “one out of two” and heal our basic incompleteness.

3. “Love is the desire and pursuit of the whole”

  • Speaker: Aristophanes
  • Key line (short form):

    “Love is the name for our desire and pursuit of wholeness.”

  • Location: 191c–192e (often cited specifically as 192e) (GradeSaver)
  • Why it’s famous: This neat formula is probably the single most quoted sentence from the dialogue; it distills the entire myth into one line.

4. When you meet “your own half”

  • Speaker: Aristophanes
  • Key line (short form):

    When someone meets the half that truly belongs to him, they’re seized by love and never want to part.

  • Location: 192c (premieretat.com)
  • Why it’s famous: Often quoted in slightly different translations in wedding speeches and “soulmate” discussions; it’s the emotional climax of Aristophanes’ story.

5. “He whom Love touches not walks in darkness”

  • Speaker: Agathon
  • Key line (short form):

    “Only the ones touched by Love have the light of fame; he whom Love touches not walks in darkness.”

  • Location: 197a (Project Gutenberg)
  • Why it’s famous: Beautiful, self-contained line that shows up everywhere on posters and quote sites; it comes in Agathon’s ornate hymn to Eros.

6. “At the touch of love everyone becomes a poet”

  • Speaker: Agathon
  • Key line (short form):

    “At Love’s touch, everyone becomes a poet.”

  • Location: 196e (Project Gutenberg)
  • Why it’s famous: Another quote-page staple. Agathon is arguing that Love inspires all artistic creation.

7. Love as a daimōn between gods and humans

  • Speaker: Diotima (via Socrates)
  • Key line (short form):

    “Love is a great spirit (daimōn), midway between god and mortal, interpreting between them.”

  • Location: 202d–203a (Western Kentucky University)
  • Why it’s famous: This is Diotima’s redefinition of Eros: not a god, but a mediator that explains why love both elevates and torments us.

8. “Love is the desire to possess the good forever”

  • Speaker: Diotima
  • Key line (short form):

    “Love is the desire to possess the good forever.”

  • Location: 206a–206b (PhilArchive)
  • Why it’s famous: This line is central in ethics and metaphysics discussions; it ties love directly to happiness, goodness, and our drive for a kind of immortality.

9. “Giving birth in beauty” – love’s function

  • Speaker: Diotima
  • Key line (short form):

    Love’s work is “begetting and giving birth in beauty,” in body and in soul.

  • Location: 206e–207a (PhilArchive)
  • Why it’s famous: This idea underlies the whole “ladder of love”: we seek beautiful bodies, laws, and ideas as places where the soul can “give birth” to children, achievements, and virtues.

10. Seeing Beauty itself and begetting true virtue

Two closely linked lines at the very top of the ladder of love:
10a. “What if a man could see Beauty itself…?”

  • Speaker: Diotima
  • Key line (short form):

    “What if someone could see Beauty itself, pure, unmixed with all the mess of mortality… would that be a life to despise?”

  • Location: 211d–211e (Numinous Quest)
    10b. “When he looks at Beauty in the only way Beauty can be seen…”
  • Speaker: Diotima
  • Key line (short form):

    “Only in that life, looking at Beauty in the only way it can be seen, can he give birth to true virtue and become, so far as possible, immortal.”

  • Location: 211e–212a (The Center for Hellenic Studies)
  • Why they’re famous: These are the climactic lines of the dialogue and get quoted constantly in discussions of Platonism, mysticism, and the relation between eros, virtue, and immortality.

References

Plato - Wikipedia
Plato (Stanford Encyclopedia of Philosophy)