Why is propaganda so much more successful when it stirs up hatred than when it tries to stir up friendly feeling?

To the primitive mind, everything is either friendly or hostile; but experience has shown that friendliness and hostility are not the conceptions by which the world is to be understood.

Prophets, mystics, poets, scientific discoverers are men whose lives are dominated by a vision; they are essentially solitary men . . . whose thoughts and emotions are not subject to the dominion of the herd.

Mankind has become so much one family that we cannot insure our own prosperity except by insuring that of everyone else.

The main thing needed to make men happy is intelligence.

Broadly speaking, Protestants like to be good and have invented theology in order to keep themselves so, whereas Catholics like to be bad and have invented theology in order to keep their neighbors good. Hence, the social character of Catholicism and the individual character of Protestantism.

Abstract work, if one wishes to do it well, must be allowed to destroy one's humanity; one raises a monument which is at the same time a tomb, in which, voluntarily, one slowly inters oneself.