Xenophon (431-355 BC), son of Gryllus, of the deme Erchia of Athens, was a soldier, mercenary and an admirer of Socrates. He is known for his writings on the history of his own times, the sayings of Socrates, and the life of Greece. He participated in the expedition led by Cyrus the Younger against his older brother, the emperor Artaxerxes II of Persia, in 401 BC. His record of the entire expedition against the Persians and the journey home was titled...