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.
Moral intellectualism
In the view of Socrates (469–399 BC), intellectualism allows that “one will do what is right or best just as soon as one truly understands what is right or best”; that virtue is a purely intellectual matter, since virtue and knowledge are cerebral relatives, which a person accrues and improves with dedication to reason. So defined, Socratic intellectualism became a key philosophic doctrine of Stoicism. The Stoics are well known for their teaching that the good is to be identified with virtue.