Success has always been a great liar.

We must be physicists in order to be creative since so far codes of values and ideals have been constructed in ignorance of physics or even in contradiction to physics.

He who bestows something great receives no gratitude; for in accepting it the recipient has already been weighed down too much.

There is no more dreary or more repulsive creature than the man who has evaded his genius.

What, if some day or night a demon were to steal after you into your loneliest loneliness and say to you: 'This life as you now live it and have lived it, you will have to live once more and innumerable times more' ... Would you not throw yourself down and gnash your teeth and curse the demon who spoke thus? Or have you once experienced a tremendous moment when you would have answered him: 'You are a god and never have I heard anything more divine.

Only the most acute and active animals are capable of boredom.

"State," I call it, where they all drink poison, the good and the wicked; "state," where they all lose themselves, the good and the wicked; "state," where they all call their slow suicide-"life."