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.

Balance out the good things and the bad that have happened in your life and you will have to acknowledge that you are still way ahead. You are unhappy because you have lost those things in which you took pleasure? But you can also take comfort in the likelihood that what is now making you miserable will also pass away.

Contemplate the extent and stability of the heavens, and then at last cease to admire worthless things.

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.

Every man must be content with that glory which he may have at home.

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?