One sticks to an opinion because he prides himself on having come to it on his own, and another because he has taken great pains to learn it and is proud to have grasped it: and so both do so out of vanity.

The job of rearing a child consists of making conscious activities unconscious.

Talking much about oneself can also be a means to conceal oneself.

Young people love what is interesting and odd, no matter how true or false it is. More mature minds love what is interesting and odd about truth. Fully mature intellects, finally, love truth, even when it appears plain and simple, boring to the ordinary person; for they have noticed that truth tends to reveal its highest wisdom in the guise of simplicity.

Just as bones, tissues, intestines, and blood vessels are enclosed in a skin that makes it possible to bear the sight of a human being, so the agitations and passions of the soul are wrapped up in vanity: it is the soul's skin.

When death brings at last the desired forgetfulness, it abolishes life and being together, and sets the seal on the knowledge that "being" is merely a continual "has been," a thing that lives by denying and destroying and contradicting itself.

People who have given us their complete confidence believe that they have a right to ours. The inference is false, a gift confers no rights.