# The Lives and Opinions of Eminent Philosophers — Themes

> Major themes in The Lives and Opinions of Eminent Philosophers by Diogenes Laërtius.

## Virtue and Self-Sufficiency

A central theme across multiple philosophers, especially Antisthenes and the Cynics, is that virtue alone is sufficient for happiness and that the wise man needs nothing external, regulating his conduct by the law of virtue rather than state laws.

### Where it surfaces

- [The Lives and Opinions of Eminent Philosophers](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/the-lives-and-opinions-of-eminent-philosophers): Many anecdotes emphasize the philosophers' virtuous lives and independence from material wealth.
- [Thales](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/thales): Thales' ethical sayings emphasize self-knowledge, moderation, and virtuous living, such as 'Know thyself' and avoiding reproach.
- [Solon](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/solon): Solon valued justice and democracy over wealth or power, as seen in his refusal to become tyrant and his preference for a life under equal laws.
- [Pittacus](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/pittacus): Pittacus exemplifies self-sufficiency by rejecting Croesus's money, saying he already had twice as much as he wanted, and by consecrating his estate to the god.
- [Bias](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/bias): Bias exemplifies virtue through his ransoming of maidens, refusal of the tripod, and his ethical advice, emphasizing selfless action and moral integrity.
- [Cleobulus](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/cleobulus): Cleobulus's apothegms emphasize moderation, self-control, avoiding injustice, and cultivating virtue, reflecting the ideal of self-sufficient wisdom.

## The Philosopher's Life and Character

The book extensively recounts anecdotes about philosophers' personal conduct, eccentricities, and moral tests—such as Xenocrates' continence with courtesans or Diogenes' asceticism—emphasizing that a philosopher's life is a direct reflection of their doctrines.

### Where it surfaces

- [Epimenides](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/epimenides): Epimenides' legendary sleep, his role as a divine purifier, and his long life illustrate the extraordinary and semi-mythical character of early philosophers.
- [Pherecydes](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/pherecydes): Pherecydes is portrayed as a wise man with prophetic abilities, a teacher of Pythagoras, and a figure whose life and death became the subject of proverbs and epigrams.
- [Xenophon](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/xenophon): The chapter focuses on Xenophon's personal virtues, his relationship with Socrates, and his conduct in exile and battle.
- [Aeschines](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/aeschines): Aeschines' poverty, devotion to Socrates, and struggles for recognition illustrate the challenges of a philosopher's life.
- [Stilpo](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/stilpo): The chapter emphasizes Stilpo's personal qualities: his simplicity, wit, affability, and his philosophical integrity in the face of political power and personal loss.
- [Crito](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/crito): The chapter highlights the character of Crito as a devoted friend and the philosopher Socrates as a teacher and recipient of patronage.

## Origins and Succession of Philosophical Schools

The work systematically traces the lineages of Greek philosophy into the Ionian and Italian schools, detailing the teacher-student successions from Thales to Epicurus and from Pythagoras to the Stoics, establishing a historical framework for philosophical thought.

### Where it surfaces

- [The Lives and Opinions of Eminent Philosophers](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/the-lives-and-opinions-of-eminent-philosophers): The chapter traces the lineage of philosophers from Thales to later thinkers, highlighting the formation of Ionian and Italian schools.
- [Book I: The Origins and Divisions of Philosophy](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/book-i): The chapter extensively catalogs the founders and divisions of philosophical schools, including the Academic, Cyrenaic, Megaric, Cynic, and others, as well as the three main branches of philosophy.
- [Book II](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/book-ii): The chapter details the succession from Euclides to Eubulides, Alexinus, and others, as well as the founding of the Megaric school and the Cyrenaic school by Aristippus.
- [Anaximenes](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/anaximenes): Anaximenes as a pupil of Anaximander (and possibly Parmenides), continuing the Milesian tradition.
- [Phaedo](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/phaedo): The chapter details the founding and evolution of the Eliac school, its transition to the Eretrian school under Menedemus, and the lineage of philosophers from Phaedo onward.
- [Euclides](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/euclides): The chapter details the founding of the Megaric school by Euclides and its succession through Eubulides, Alexinus, Euphantus, Diodorus Cronus, and Stilpo.

## Wisdom vs. Sophistry

The text distinguishes between genuine wisdom (sophia) and mere cleverness or sophistry, noting that Pythagoras coined the term 'philosopher' to avoid calling himself wise, and that many figures criticized empty dialectical hair-splitting as useless for governing men.

### Where it surfaces

- [Book I: The Origins and Divisions of Philosophy](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/book-i): The distinction between true wisdom (embodied by Solon and Thales) and mere sophistry is implied in the discussion of philosophical sects and the criteria for truth.
- [Thales](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/thales): Thales is distinguished as the first to be called wise, and his practical aphorisms and political advice contrast with mere cleverness.
- [Chilo](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/chilo): Chilo's concise speech (the 'Chilonean fashion') and his practical wisdom contrast with sophistry; his sayings are presented as distilled truths.
- [Pittacus](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/pittacus): Pittacus's practical wisdom is contrasted with empty rhetoric; his aphorisms and legal reforms emphasize truth, good faith, and action over clever speech.
- [Bias](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/bias): Bias is portrayed as a wise man who uses his rhetorical skills for just causes, contrasting with sophistry; his aphorisms and decisions reflect genuine wisdom.
- [Cleobulus](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/cleobulus): The debate over the authorship of the Midas epigram and Simonides' critique of Cleobulus highlight tensions between genuine wisdom and mere poetic or rhetorical cleverness.

## Political Engagement and Tyranny

Philosophers are shown navigating political power, from Solon's lawgiving and feigned madness to free Salamis, to Periander's tyrannical violence, and Xenocrates' incorruptible embassy to Philip, highlighting the tension between philosophical integrity and political necessity.

### Where it surfaces

- [Book I: The Origins and Divisions of Philosophy](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/book-i): Solon's actions against Pisistratus' tyranny and his advice to Periander highlight the tension between political engagement and the dangers of autocratic rule.
- [Solon](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/solon): Solon actively resisted the rise of Pisistratus, choosing exile over complicity, and advised Periander on the dangers of tyranny.
- [Chilo](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/chilo): Chilo's letter to Periander warns of the precarious position of a tyrant and advises against expedition, reflecting on political prudence and the dangers of sole rule.
- [Pittacus](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/pittacus): Pittacus rose to power as a tyrant after a military victory, ruled justly for ten years, then voluntarily resigned, demonstrating virtuous political engagement.
- [Periander](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/periander): Periander's rule exemplifies the nature of tyranny in ancient Greece, including the use of violence, suppression of rivals, and the tension between absolute power and wisdom.
- [Epimenides](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/epimenides): Epimenides' letter to Solon warns about the dangers of tyranny and expresses hope for Athenian resistance, showing philosophical engagement with political issues.

## Death and Legacy

The book frequently records the manner of philosophers' deaths—whether by suicide, disease, or old age—and includes epitaphs and epigrams, emphasizing how their lives and writings shaped their enduring reputations and the schools they founded.

### Where it surfaces

- [Solon](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/solon): The chapter describes Solon's death in Cyprus, his instructions to scatter his ashes over Salamis, and the enduring fame of his laws and poems.
- [Periander](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/periander): The chapter explores Periander's death, his secret tomb, and his enduring reputation as both a tyrant and a wise man, highlighting the complexity of his legacy.
- [Myson](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/myson): The chapter concludes with Myson's death at age ninety-seven, and discusses how his sayings and doings were sometimes attributed to others due to his obscurity.
- [Epimenides](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/epimenides): The chapter discusses Epimenides' death at an advanced age, his veneration as a god by Cretans, and the preservation of his body by Lacedaemonians, highlighting his lasting legacy.
- [Pherecydes](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/pherecydes): The chapter details Pherecydes' death from the lousy disease, his burial in Magnesia, and the various accounts of his end, emphasizing how his wisdom and prophecies continued to be honored after his death.
- [Anaxagoras](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/anaxagoras): His death in Lampsacus, the epitaph, and the annual holiday for children reflect his lasting influence and the respect he commanded.

## Natural Philosophy and Cosmology

Many philosophers, such as Heraclitus, Parmenides, and Strato, are described through their theories on elements, change, the cosmos, and natural phenomena, reflecting the ancient Greek drive to explain the physical world through rational principles.

### Where it surfaces

- [Thales](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/thales): Thales is presented as the first to study natural philosophy, asserting water as the principle of all things and attributing souls to lifeless objects.
- [Pherecydes](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/pherecydes): Pherecydes is credited as the first Greek to write on natural philosophy and the gods, with his work describing the primordial entities Jupiter, Time, and Chthon.
- [Anaximander](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/anaximander): Anaximander's theories on the Infinite, spherical Earth, celestial bodies, and his inventions (gnomon, sundials, maps) exemplify early natural philosophy and cosmological speculation.
- [Anaximenes](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/anaximenes): Anaximenes' theory that air and the Infinite are the principles of all things, and his view that stars move around the earth.
- [Anaxagoras](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/anaxagoras): Anaxagoras introduced Nous as the ordering principle, explained celestial bodies as fiery stones, and theorized about winds, thunder, earthquakes, and the generation of animals.
- [Archelaus](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/archelaus): Archelaus's theories on generation, the elements, sound, the sea, the sun, and the boundless universe are central to the chapter.

## Ethics and Self-Control

A recurring theme is the emphasis on self-discipline, continence, and the mastery of desires, as seen in the Stoic and Cynic traditions, with figures like Cleanthes and Chrysippus advocating for apathy, temperance, and the primacy of ethical conduct over pleasure.

### Where it surfaces

- [Chilo](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/chilo): Chilo's numerous aphorisms emphasize self-restraint, silence, moderation, and moral integrity, such as 'To rule one’s tongue' and 'To prefer punishment to disgraceful gain.'
- [Pittacus](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/pittacus): His law doubling punishment for crimes committed while drunk aimed to deter drunkenness, and his sayings promote temperance, piety, and careful speech.
- [Periander](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/periander): Periander's sayings emphasize moderation, honor, and the dangers of rashness, contrasting with his own violent actions and illustrating the ethical tensions in his character.
- [Anacharsis, the Scythian](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/anacharsis-the-scythian): His advice on restraining the tongue, avoiding drunkenness, and valuing true friendship reflects a focus on ethical self-discipline.
- [Book II](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/book-ii): Aristippus's hedonism and adaptability are contrasted with Diogenes' asceticism and Socrates' moral focus, highlighting different ethical approaches.
- [Archelaus](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/archelaus): Archelaus discussed laws, justice, and honor, arguing that moral distinctions are based on law rather than nature, influencing Socrates' ethical turn.

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