Deception, flattering, lying, deluding, talking behind the back, putting up a false front, living in borrowed splendor, wearing a mask, hiding behind convention, playing a role for others and for oneself -- in short, a continuous fluttering around the solitary flame of vanity -- is so much the rule and the law among men that there is almost nothing which is less comprehensible than how an honest and pure drive for truth could have arisen among them.

If an architect wants to strengthen a decrepit arch, he increases the load laid upon it, for thereby the parts are joined more firmly together.

Everything that is profound loves the mask: the profoundest things have a hatred even of figure and likeness.

Unconsciously we seek the principles and opinions which are suited to our temperament, so that at last it seems as if these principles and opinions had formed our character and given it support and stability.

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.

The moral earth, too, is round! The moral earth, too, has its antipodes! The antipodes, too, have their right to exist! There is still another world to be discovered--and more than one! Set sail, you philosophers!

If we train our conscience, it kisses us while it hurts