We only half live when we only half think.

Clever tyrants are never punished.

History in general is a collection of crimes, follies, and misfortunes among which we have now and then met with a few virtues, and some happy times.

All is a miracle. The stupendous order of nature, the revolution of a hundred millions of worlds around a million of stars, the activity of light, the life of all animals, all are grand and perpetual miracles.

Life is bristling with thorns, and I know no other remedy than to cultivate one's garden.

Answer me, you who believe that animals are only machines. Has nature arranged for this animal to have all the machinery of feelings only in order for it not to have any at all?

Friends should be preferred to kings.