On the whole, the longing for solitude is a sign that there still is spirit in a person and is a measure of what spirit there is.

Here I shall add that the concept of change, and with it the concept of motion, as change of place, is possible only through and in the representation of time. & Motion, for example, presupposes the perception of something movable. But space considered in itself contains nothing movable; consequently motion must be something which is found in space only through experience -in other words, is an empirical datum.

Sensitive people faced with the prospect of a camera portrait put on a face they think is one they would like to show the world very often what lies behind the facade is rare and more wonderful than the subject knows or dares to believe.

When a man is proud because he can understand and explain the writings of Chrysippus, say to yourself, 'if Chrysippus had not written obscurely, this man would have had nothing to be proud of.'

Every friend of freedom... must be as revolted as I am by the prospect of turning the United States into an armed camp, by the vision of jails filled with casual drug users and of an army of enforcers empowered to invade the liberty of citizens on slight evidence.

Freedom is a very great reality, but it means above all things, freedom from lies.