Those who are quite satisfied sit still and do nothing; those who are not quite satisfied are the sole benefactors of the world.

Cruelty, if we consider it as a crime, is the greatest of all; if we consider it as a madness, we are equally justifiable in applying to it the readiest and the surest means of oppression.

A great man knows the value of greatness; he dares not hazard it, he will not squander it.

Of all failures, to fail in a witticism is the worst, and the mishap is the more calamitous in a drawn-out and detailed one

Nothing is pleasanter to me than exploring in a library.

Music is God's gift to man, the only art of Heaven given to earth, the only art of earth we take to Heaven.

Truth, like the juice of the poppy, in small quantities, calms men; in larger, heats and irritates them, and is attended by fatal consequences in excess.