Panaetius
Panaetius (; Greek: Παναίτιος; c. 185 - c. 110/109 BC) of Rhodes was a Stoic philosopher. He was a pupil of Diogenes of Babylon and Antipater of Tarsus in Athens, before moving to Rome where he did much to introduce Stoic doctrines to the city. After the death of Scipio in 129 BC, he returned to the Stoic school in Athens, and was its last undisputed scholarch. With Panaetius, Stoicism became much more eclectic. His most famous work was his On Duties, the principal source used by Cicero in his own work of the same name.
Life
Panaetius, son of Nicagoras, was born around 185-180 BC, into an old and eminent Rhodian family. He is said to have been a pupil of the linguist Crates of Mallus, who taught in Pergamum, and moved to Athens where he attended the lectures of Critolaus and Carneades, but attached himself principally to the Stoic Diogenes of Babylon and his disciple Antipater of Tarsus. Around 149 BC, he was chosen by the people of Lindos on Rhodes to be the priest of Poseidon Hippios.