The avarice of mankind is insatiable.
To be ignorant of motion is to be ignorant of nature
He who cannot see the truth for himself, nor, hearing it from others, store it away in his mind, that man is utterly worthless.
Consider pleasures as they depart, not as they come.
There is simple ignorance, which is the source of lighter offenses, and double ignorance, which is accompanied by a conceit of wisdom.
It is not always the same thing to be a good man and a good citizen.