Love grants in a moment what toil can hardly acheive in an age.

Art is long, life short, judgment difficult, opportunity transient. To act is easy, to think is hard; to act according to our thought is troublesome. Every beginning is cheerful: the threshold is the place of expectation.

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.

What by a straight path cannot be reached by crooked ways is never won.

The finished man, you know, is difficult to please; a growing mind will ever show you gratitude. --Faust 1, lines 182-3

Those who make use of devotion as a means and end generally are hypocrites.

On all the peaks lies peace.