Either God exists or He doesn't. Either I believe in God or I don't. Of the four possibilities, only one is to my disadvantage. To avoid that possibility, I believe in God.

The strength of a man's virtue should not be measured by his special exertions, but by his habitual acts.

Imagination magnifies small objects with fantastic exaggeration until they fill our soul, and with bold insolence cuts down great things to its own size, as when speaking of God.

It is your own assent to yourself, and the constant voice of your own reason, and not of others, that should make you believe.

The least movement is of importance to all nature. The entire ocean is affected by a pebble.

We do not worry about being respected in towns through which we pass. But if we are going to remain in one for a certain time, we do worry. How long does this time have to be?

Man is equally incapable of seeing the nothingness from which he emerges and the infinity in which he is engulfed.