The Germans are like women, you can scarcely ever fathom their depths - they haven't any.

Many find their heart when they have lost their head.

He who knows himself to be profound endeavors to be clear; he who would like to appear profound to the crowd endeavors to be obscure.

Extreme positions are not succeeded by moderate ones but by extreme positions of the opposite kind.

One often contradicts an opinion when what is uncongenial is really the tone in which it was conveyed.

I want to teach men the sense of their existence, which is the Superman, the lightning out of the dark cloud man.

When we have to change our mind about a person, we hold the inconvenience he causes us very much against him.