Thinker

Plato quotes

16 passages in English · c. 428/427–348/347 BCE · Platonism.

Overview

Plato (c. 428/427–348/347 BCE) was an Athenian of high birth, a devoted associate of Socrates, and the founder of the Academy. After Socrates’ execution in 399 he traveled—traditionally to Italy and Sicily—before establishing in Athens a community devoted to mathematics and philosophy that endured for centuries. He wrote dialogues of extraordinary literary art, often starring Socrates, that raise lasting questions about justice, knowledge, love, and the structure of reality. Birth and death are conventionally given with a year’s uncertainty in Britannica and related handbooks. He taught Aristotle and thereby linked the two central Classical systems. No other ancient author so combined dramatic form with metaphysical ambition. His works became the matrix for Middle Platonism, Neoplatonism, and endless later appropriations in theology, politics, and aesthetics across Europe, the Near East, and beyond.

Main ideas

Plato’s theory of Forms holds that changing sensibles participate in eternal, intelligible paradigms—Justice, Beauty, Equality—crowned by the Form of the Good. Knowledge differs from mere opinion by grasping these stable realities through dialectic and recollection. The Republic coordinates justice in the soul, with reason ruling spirit and appetite, with an educationally stratified city. Allegories of the sun, line, and cave dramatize ascent from shadows to understanding. Later dialogues scrutinize being and non-being, false judgment, and a demiurge who crafts the cosmos after eternal models. Ethics aims at psychic harmony and assimilation to the divine measure. Methodologically, elenchus, hypothesis, and collection-and-division replace sophistic persuasion. Politics in the Laws softens utopian rigor while retaining philosophy’s claim to guide law. The dialogues refuse a single dogmatic voice, inviting readers into unfinished inquiry.

Major works

  • Republic
  • Symposium
  • Phaedo
  • Timaeus

Legacy

Platonism shaped late antique metaphysics, Christian and Islamic theology, Renaissance art and humanism, and modern idealism. Classroom and university ideals still echo the Academy’s communal study of mathematics and dialectic. Debates on justice, education, and the reality of universals remain ongoing conversations with Plato, whether scholars affirm, revise, or reject his dualisms and political hierarchies. His dialogues remain among the most assigned texts in philosophy curricula worldwide.

Themes in this archive

Philosophy (4) · Justice (2) · Plato on justice · Love (1) · Reason (1) · Freedom (1) · Knowledge (1)

  1. Justice is doing one's own work and not meddling in others'.
  2. Love is the desire for the perpetual possession of the good.
  3. Let us not become haters of argument — that is a great danger to the soul.
  4. Extreme freedom seems to change into nothing but extreme slavery.
  5. Picture human beings as if living in an underground, cave-like dwelling.
  6. First, it always is, and neither comes to be nor perishes.
  7. This very practice of philosophers is a release and separation of soul from body.
  8. I say that the noble and good man and woman are happy, and the unjust and wicked are miserable.
  9. This feeling—wonder—belongs especially to the philosopher; philosophy has no other beginning than this.
  10. Unless…either philosophers rule in the cities or those now called kings…philosophize genuinely and adequately…
  11. Every human soul has by nature beheld the things that are.
  12. Justice is somehow a kind of virtue.
  13. The beginning is the most important part of any work.
  14. The heaviest penalty is to be ruled by someone worse than oneself.
  15. Wonder is very much the mark of a philosopher.
  16. The Good… is to be honored still more highly than knowledge and truth.