We no longer love our knowledge enough once we have passed it on.

What really raises one's indignation against suffering is not suffering intrinsically, but the senselessness of suffering

Books for general reading always smell bad; the odor of common people hangs around them.

Only with the ultimate knowledge of all things will man have come to know himself. For things are but the boundaries of man.

What doesn't kill you make you stronger.

In everything one thing is impossible: rationality.

The man of knowledge must be able not only to love his enemies but also to hate his friends.