# Sphaerus — The Lives and Opinions of Eminent Philosophers character guide

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

**Role:** supporting

**Also known as:** Sphaerus the Stoic

**First appearance:** 0069-sphaerus

## Snapshot

A Stoic of the second generation, student to both Zeno and Cleanthes, whose name survives mainly through the succession lists of the school.

## Who they are

Sphaerus occupies the quiet middle of the Stoic lineage, one of those figures whose importance lies less in original doctrine than in transmission — he carried the school's teachings forward when its founders were gone. His presence in Diogenes' catalogue reminds the reader that philosophy is also an institution, built by men whose names we barely know. He is the kind of supporting figure who makes the great names legible by showing the ordinary labor behind them.

## In the story

### [Sphaerus](https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/chapters/sphaerus)

Native of the Bosphorus, pupil of Cleanthes and Zeno, visited Ptolemy Philopater in Alexandria, debated the wise man's relation to opinion.

## Links

- HTML: https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/characters/sphaerus
- Book: https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se
- All characters: https://www.betterreads.dev/discover/the_lives_and_opinions_of_eminent_philosophers_se/characters