When one is polite in German, one lies.

Deny yourself! You must deny yourself! That is the song that never ends.

If you want to make life easy, make it hard.

Die Mathematiker sind eine Art Franzosen. Spricht man zu ihnen, so übersetzen sie alles in ihre eigene Sprache, und so wird es alsobald etwas ganz anderes. Mathematicians are a kind of Frenchmen. Whenever you say anything or talk to them, they translate it into their own language, and right away it is something completely different.

I make presents to the mother but think of the daughter.

One glance, one word from you gives more pleasure than all the wisdom of this world.

Happiness is a ball after which we run wherever it rolls, and we push it with our feet when it stops.