Lactantius

“ And as there is but one founder and ruler of the world, God, and as truth is one; so wisdom must be one and simple, because, if anything is true and good, it cannot be perfect unless it is the only one of its kind. But if philosophy were able to form the life, no others but philosophers would be good, and all those who had not learned it would be always bad. But since there are, and always have been, innumerable persons who are or have been good without any learning, but of philosophers there has seldom been one who has done anything praiseworthy in his life ”

“ We may see some of such levity and ostentation, that it would be better for them not to have learned at all; others eagerly desirous of money, others of glory; many the slaves of lusts, so that their speech wonderfully disagrees with their life.” Cornelius Nepos also writes to the same Cicero: “So far am I from thinking that philosophy is the teacher of life and the completer of happiness, that I consider that none have greater need of teachers of living than many who are engaged in the discussion of this subject. ”

“ All things which the luxurious and the ignorant do, the wise man also will do, but not in the same manner, and with the same purpose. But it makes no difference with what intention you act, when the action itself is vicious ”