Fathers and sons are much more considerate of one another than mothers and daughters.

For one thing is needful: that a human being should attain satisfaction with himself, whether it be by means of this or that poetry or art; only then is a human being at all tolerable to behold. Whoever is dissatisfied with himself is constantly ready for revenge, and we others will be his victims, if only by having to endure his ugly sight.

Whatever a theologian regards as true must be false: there you have almost a criterion of truth.

The snake which cannot cast its skin has to die. As well the minds which are prevented from changing their opinions; they cease to be mind.

We ought to face our destiny with courage.

Anyone who has declared someone else to be an idiot, a bad apple, is annoyed when it turns out in the end that he isn't.

The most vulnerable and yet most unconquerable of things is human vanity; nay, through being wounded its strength increases and can grow to giant proportions.