The multitude which does not reduce itself to unity is confusion.

There are only three types of people; those who have found God and serve him; those who have not found God and seek him, and those who live not seeking, or finding him. The first are rational and happy; the second unhappy and rational, and the third foolish and unhappy.

If we must not act save on a certainty, we ought not to act on religion, for it is not certain. But how many things we do on an uncertainty, sea voyages, battles!

If you want to be a real seeker of truth, you need to, at least once in your lifetime, doubt in, as much as it's possible, in everything.

Too much pleasure disagrees with us. Too many concords are annoying in music; too many benefits irritate us; we wish to have the wherewithal to overpay our debts.

Opinion is, as it were, the queen of the world, but force is its tyrant.

The last proceeding of reason is to recognize that there is an infinity of things which are beyond it. There is nothing so conformable to reason as this disavowal of reason.