The joy of learning is as indispensable in study as breathing is in running.

Force is as pitiless to the man who possesses it, or thinks he does, as it is to its victims; the second it crushes, the first it intoxicates. The truth is, nobody really possesses it.

Fire destroys that which feeds it.

A well ordered society would be one where the State only had a negative action, comparable to that of a rudder: a light pressure at the right moment to counteract the first suggestion of any loss of equilibrium.

In what concerns divine things, belief is not appropriate. Only certainty will do. Anything less than certainty is unworthy of God.

The contradictions the mind comes up against, these are the only realities, the criterion of the real. There is no contradiction in what is imaginary. Contradiction is the test of necessity.

Evil is license, and that is why it is monotonous: everything has to be drawn from ourselves. One is condemned to false infinity. That is hell itself.