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.
Eudaimonia
As with all other ancient ethical thinkers, Socrates thought that all human beings wanted eudaimonia more than anything else. (see Plato, "Apology" 30b, "Euthydemus" 280d–282d, "Meno" 87d–89a). However, Socrates adopted a quite radical form of eudaimonism (see above): he seems to have thought that virtue is both necessary and sufficient for eudaimonia. Socrates is convinced that virtues such as self-control, courage, justice, piety, wisdom and related qualities of mind and soul are absolutely crucial if a person is to lead a good and happy (eudaimon) life. Virtues guarantee a happy life eudaimonia. For example, in the "Meno", with respect to wisdom, he says: "everything the soul endeavours or endures under the guidance of wisdom ends in happiness" ["Meno" 88c].