Money is human happiness in the abstract.

It is the courage to make a clean breast of it in the face of every question that makes the philosopher.

There are, first of all, two kinds of authors: those who write for the subject's sake, and those who write for writing's sake.

Will power is to the mind like a strong blind man who carries on his shoulders a lame man who can see.

It is only a man's own fundamental thoughts that have truth and life in them.

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

To truth only a brief celebration of victory is allowed between the two long periods during which it is condemned as paradoxical, or disparaged as trivial.