Diogenes of Babylon

Born in Seleucia on the Tigris in Babylonia, Diogenes was educated at Athens under the auspices of Chrysippus and succeeded Zeno of Tarsus as head (scholarch) of the Stoic school there in the 2nd century BC.

[2] Together with Carneades and Critolaus, he was sent to Rome to appeal a fine of five hundred talents imposed on Athens in 155 BC for the sack of Oropus.

[16] There are several passages in Cicero from which we may infer that Diogenes wrote on other subjects also, such as duty, the highest good, and the like.

[18] Diogenes believed that just as diet and exercise can produce a healthy body, so that music can bring health to the mind and can treat psychological illnesses.

[19] Diogenes uses the example of the trumpet, or similar military instrument, which can stir the soldier to bravery.