Note 28
To My Achievements And Attributes from Folly Speaks

Folly's list of suicides is well known. Diogenes the Cynic and Xenocrates are sometimes said (as by Diogenes Laertius) to have committed suicide. Cato of Utica is perhaps the most famous of all the antique suicides (along with Socrates and Seneca) for Renaissance authors. Both Cassius and Brutus killed themselves in 42 BC after Antony's victory at Philippi; Chiron, accidentally wounded by Hercules, preferred to die although he was immortal.