Progress, far from consisting in change, depends on retentiveness. Those who cannot remember the past are condemned to repeat it.

If pain could have cured us we should long ago have been saved.

A body seriously out of equilibrium, either with itself or with its environment, perishes outright. Not so a mind. Madness and suffering can set themselves no limit.

Sanctity and genius are as rebellious as vice.

Character is the basis of happiness and happiness the sanction of character.

Man is a fighting animal; his thoughts are his banners, and it is a failure of nerve in him if they are only thoughts.

The same battle in the clouds will be known to the deaf only as lightning and to the blind only as thunder.