It is not only arrogant, but it is profligate, for a man to disregard the world's opinion of himself.

A true friend is a sort of second self.

I wonder that a soothsayer doesn't laugh whenever he sees another soothsayer.

History is the witness that testifies to the passing of time.

Honourable mention encourages science, and merit is fostered by praise.

We do not destroy religion by destroying superstition.

There is nothing so absurd that some philosopher has not already said it.