Free will in antiquity
In Plato's Gorgias (and in the Protagoras 345c4-e6), Socrates argues that no one does wrong willingly, one of the most famous doctrines to be associated with him. When framed in modern (Western) terms, the implication is that it is ignorance, rather that free individual agency, that is responsible for morally wrong actions.
Apology (Plato)
For his self-defence, Socrates first eliminates any claim that he is a wise man. He says that Chaerephon, reputed to be impetuous, went to the Oracle of Delphi and asked her, the Pythia, to tell him of anyone who was wiser than Socrates. The Pythia answered to Chaerephon that there was no man wiser. On learning of that oracular pronouncement, Socrates says he was astounded, because, on the one hand, it is against the nature of the Oracle to lie, but, on the other hand, he knew he was not wise. Therefore, Socrates sought to find someone wiser than himself, so that he could take that person as evidence to the Oracle at Delphi. Hence why Socrates minutely queried everyone who appeared to be a wise person. In that vein, he tested the minds of politicians, poets, and scholars, for wisdom; although he occasionally found genius, Socrates found no one who possessed wisdom; yet, each man was thought wise by the people, and each man thought himself wise; therefore, he (Socrates) was the better man, because he was aware that he was not wise.