It is not doubt,is certitude that drives you mad.

Man alone suffers so excruciatingly in the world that he was compelled to invent laughter.

The happiness of man is: I will. The happiness of woman is: he wills. 'Behold , just now the world ... entire love. And woman must obey and find a depth for her surface. Surface is the disposition of woman: a mobile, stormy film over shallow water. Man's disposition, however, is deep; his river roars in subterranean caves: woman feels his strength but does not comprehend it.

Love brings to light the lofty and hidden characteristics of the lover--what is rare and exceptional in him: to that extent it caneasily be deceptive with respect to what is normal in him.

A moral system valid for all is basically immoral.

What doesn't kill you make you stronger.

One is most dishonest to one's god: he is not allowed to sin.