The reason why we have to acquire wealth is the body, because we are slaves in its service.

The years wrinkle our skin, but lack of enthusiasm wrinkles our soul.

The secret of happiness, you see, is not found in seeking more, but in developing the capacity to enjoy less.

Falling down is not a failure. Failure comes when you stay where you have fallen.

I only know how little I know

I must first know myself, as the Delphian inscription says; to be curious about that which is not my concern, while I am still in ignorance of my own self, would be ridiculous. And therefore I bid farewell to all this; the common opinion is enough for me. For, as I was saying, I want to know not about this, but about myself: am I a monster more complicated and swollen with passion than the serpent Typho, or a creature of a gentler and simpler sort, to whom Nature has given a diviner and lowlier destiny?

A system of morality that is based on relative emotional values is a mere illusion, a thoroughly vulgar conception that has nothing sound in it and nothing true.