Full Idea
No one wishes to be bad, but a bad man is bad because of some flaw in his physical makeup and failure in his education, neither of which he likes or chooses.
Gist of Idea
No one wants to be bad, but bad men result from physical and educational failures, which they do not want or choose
Source
Plato (Timaeus [c.362 BCE], 86e)
Book Reference
Plato: 'Timaeus and Critias', ed/tr. Lee,Desmond [Penguin 1971], p.117