Nature herself makes the wise man rich.
Men think they may justly do that for which they have a precedent.
The mind becomes accustomed to things by the habitual sight of them, and neither wonders nor inquires about the reasons for things it sees all the time.
Time destroys the speculation of men, but it confirms nature.
There is, I assure you, a medical art for the soul. It is philosophy, whose aid need not be sought, as in bodily diseases, from outside ourselves. We must endeavor with all our resources and all our strength to become capable of doctoring ourselves.
In everything, satiety closely follows the greatest pleasures.