I fear animals regard man as a creature of their own kind which has in a highly dangerous fashion lost its healthy animal reason - as the mad animal, as the laughing animal, as the weeping animal, as the unhappy animal.

There is one thing one has to have either a soul that is cheerful by nature, or a soul made cheerful by work, love, art, and knowledge.

Such a man as instinctively feeds on pure ambrosia and leaves alone the indigestible in things.

The really historical performance would talk to ghosts.

That little hypocrites and half-crazed people dare to imagine that on their account the laws of nature are constantly broken; such an enhancement of every kind of selfishness to infinity, to impudence, cannot be branded with sufficient contempt. And yet Christianity owes its triumph to this pitiable flattery of personal vanity.

The higher you ascend, the smaller you appear to the eye of envy. But most of all they hate those who fly.

We must beware of one who is in a passion against us as of one who has once sought our life; for the fact that we still live is due to the absence of power to kill, - if looks could kill, we should have been dead long ago.