Diogenes Laertius : Lives of Eminent Philosophers, Hardcover by Diogenes, Laertius, ISBN 0674992040, ISBN-13 9780674992047, Brand New, Free shipping in the US

Diogenes Laertius (probably early third century BCE) compiled his compendium on the lives and doctrines of the ancient philosophers from hundreds of sources. It ranges over three centuries, from Thales to Epicurus, portraying forty-five important figures, and is enriched by numerous quotations.