Physics is unable to stand on its own feet, but needs a metaphysics on which to support itself, whatever fine airs it may assume towards the latter.

No doubt, when modesty was made a virtue, it was a very advantageous thing for the fools, for everybody is expected to speak of himself as if he were one.

In truth the most striking figure for the relation of the two is that of the strong blind man carrying the sighted lame man on his shoulders.

If we were not all so interested in ourselves, life would be so uninteresting that none of us would be able to endure it.

Reasonable and vicious are quite consistent with each other, in fact, only through their union are great and far-reaching crimes possible

Many books serve merely to show how many ways there are of being wrong, and how far astray you yourself would go if you followed their guidance. You should read only when your own thoughts dry up.

Gaiety alone, as it were, is the hard cash of happiness; everything else is just a promissory note.