A pessimist is an optimist in full possession of the facts.

That arithmetic is the basest of all mental activities is proved by the fact that it is the only one that can be accomplished by a machine.

All the cruelty and torment of which the world is full is in fact merely the necessary result of the totality of the forms under which the will to live is objectified.

In reading, the mind is, in fact, only the playground of another's thoughts.