One must need to be strong, otherwise one will never become strong.

Modern science has as its object as little pain as possible, as long a life as possible - hence a sort of eternal blessedness, but of a very limited kind in comparison with the promises of religion.

If you know the why, you can live any how.

I know my fate. One day my name will be tied to the memory of something monstrous - a crisis without equal on earth.... I am no man, I am dynamite!

Your only problem, perhaps, is that you scream without letting yourself cry.

With deep men, as with deep wells, it takes a long time for anything that falls into them to hit bottom. Onlookers, who almost never wait long enough, readily suppose that such men are callous and unresponsive--or even boring.

I climb upon the highest mountains, laughing at all tragedies - whether real or imaginary.