# Diogenes of Apollonia — The Lives and Opinions of Eminent Philosophers character guide

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

**Role:** supporting

**First appearance:** 0089-diogenes-of-apollonia

## Who they are

Pre-Socratic philosopher who believed air was the primary substance.

## Links

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