Sexual passion is the cause of war and the end of peace, the basis of what is serious... and consequently the concentration of all desire

Opinion is like a pendulum and obeys the same law. If it goes past the centre of gravity on one side, it must go a like distance on the other; and it is only after a certain time that it finds the true point at which it can remain at rest.

You can do what you will, but in any given moment of your life you can will only one definite thing and absolutely nothing other than that one thing.

Marrying means, to grasp blindfolded into a sack hoping to find out an eel out of an assembly of snakes.

Genius is an intellect that has become unfaithful to its destiny.

All religions promise a reward beyond life, in eternity, for excellences of the will or heart, but none for excellences of the head or understanding.

To desire immortality is to desire the eternal perpetuation of a great mistake