Nothing is miserable unless you think it so; and on the other hand, nothing brings happiness unless you are content with it.

A man content to go to heaven alone will never go to heaven.

The science of numbers ought to be preferred as an acquisition before all others, because of its necessity and because of the great secrets and other mysteries which there are in the properties of numbers. All sciences partake of it, and it has need of none.

So nothing is ever good or bad unless you think it so, and vice versa. All luck is good luck to the man who bears it with equanimity.

Good men seek it by the natural means of the virtues; evil men, however, try to achieve the same goal by a variety of concupiscences, and that is surely an unnatural way of seeking the good. Don't you agree?

Give me Thy light, and fix my eyes on Thee!

He who has calmly reconciled his life to fate ... can look fortune in the face.