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.
Protagoras (dialogue)
Socrates then broaches the initial question of whether virtue is one or many things, himself claiming that all virtue is knowledge and therefore one. He argues that the reason people act harmfully, to others or themselves, is because they only see the short term gains while ignoring the long term losses which might outweigh them, just like one makes errors in judging the size of objects that are far away. He says that if men were taught the art of calculating these things correctly, have a more exact knowledge that is, they would not act harmfully (357c–358d). Same goes for bravery. A brave swimmer is one who knows how to swim better and therefore, in a way, all virtues are essentially knowledge and can be considered one and the same, more like parts of golden objects (as discussed above) rather than the parts of a face. While Socrates seems to have won the argument, he points to the fact that if all virtue is knowledge, it "can" in fact be taught. He draws the conclusion that to an observer he and Protagoras would seem as crazy, having argued at great lengths only to mutually exchanged positions with Socrates now believing that virtue can be taught and Protagoras that all virtues are one instead of his initial position (361a). Protagoras acknowledges Socrates a notable opponent in dispute while being much younger than he and predicts that he could become one of the wisest men alive. Socrates departs for whatever business he claimed he had when he wanted to end the dialogue earlier.