Marcus Tullius Cicero,
The Academic Questions, Treatise De Finibus…
(1891)
“ But what can be less consistent than what they say, namely, that when they have obtained the knowledge of the chief good they then return to nature, in order to seek in it the principle of action, that is to say, of duty? For it is not the principle of action or duty which impels them to desire those things which are according to nature ”
