The greatest progress that the human race has made lies in learning how to make correct inferences.

Pity is the most agreeable feeling among those who have little pride and no prospects of great conquests.

The Germans are like women, you can scarcely ever fathom their depths - they haven't any.

For our self respect depends upon our ability to make requital, for good or for evil.

There is such a thing as a hatred of lies and dissimulation, which is the outcome of a delicate sense of humor; there is also the selfsame hatred but as the result of cowardice, in so far as falsehood is forbidden by Divine law. Too cowardly to lie.

Conversation with a friend will only bear good fruit of knowledge when both think only of the matter under consideration and forget that they are friends.

Spirit is the life that itself cuts into life: with its own torment it increases its own knowledge. Did you already know that?