Sanity is a madness put to good use.

The world is not respectable; it is mortal, tormented, confused, deluded forever; but it is shot through with beauty, with love, with glints of courage and laughter; and in these, the spirit blooms timidly, and struggles to the light amid the thorns.

Skepticism, like chastity, should not be relinquished too readily.

Whoever it was who searched the heavens with a telescope and found no God would not have found the human mind if he had searched the brain with a microscope.

To knock a thing down, especially if it is cocked at an arrogant angle, is a deep delight of the blood.

Before you contradict an old man, my fair friend, you should endeavor to understand him.

The wisest mind has something yet to learn.

Music is essentially useless, as life is.