The most fundamental form of human stupidity is forgetting what we were trying to do in the first place.

Phlegmatic natures can be inspired to enthusiasm only by being made into fanatics.

The charm of knowledge would be small indeed, were it not that there is so much shame to be overcome on the way to it.

We criticize a man or a book most sharply when we sketch out their ideal.

There is not sufficient religion in the world merely to put an end to the number of religions.

Madness is the exception in individuals but the rule in groups.

It is the most sensual men who need to flee women and torment their bodies.