If then nature makes nothing without some end in view, nothing to no purpose, it must be that nature has made all of them for the sake of man.
AristotleIt is true, indeed, that the account Plato gives in 'Timaeus' is different from what he says in his so-called 'unwritten teachings.'
AristotleWe assume therefore that moral virtue is the quality of acting in the best way in relation to pleasures and pains, and that vice is the opposite.
Aristotle