Custom determines what is agreeable.

What amazes me most is to see that everyone is not amazed at his own weakness.

If you do not love too much, you do not love enough.

Man's true nature being lost, everything becomes his nature; as, his true good being lost, everything becomes his good.

We need not have the loftiest mind to understand that here is no lasting and real satisfaction, that our pleasures are only vanity, that our evils are infinite, and, lastly, that death, which threatens us every moment, must infallibly place us within a few years under the dreadful necessity of being forever either annihilated or unhappy.

Men seek rest in a struggle against difficulties; and when they have conquered these, rest becomes insufferable.

Man's sensitivity to the little things and insensitivity to the greatest are the signs of a strange disorder.