Thou wilt find rest from vain fancies if thou doest every act in life as though it were thy last.
Now the greatest external good we should assume to be the thing which we offer as a tribute to the gods, and which is most coveted by men of high station, and is the prize awarded for the noblest deeds; and such a thing is honor, for honor is clearly the greatest of external goods.
No great mind has ever existed without a touch of madness.
He who hath many friends hath none.
There must be in prudence also some master virtue.
The difference between a learned man and an ignorant one is the same as that between a living man and a corpse.