One believes others will do what he will do to himself.

One sometimes says: 'He killed himself because he was bored with life.' One ought rather to say: 'He killed himself because he was bored by lack of life.'

A faith is a necessity to a man. Woe to him who believes in nothing.

He that overvalues himself will undervalue others, and he that undervalues others will oppress them.

The learned man knows that he is ignorant.

The animal is ignorant of the fact that he knows. The man is aware of the fact that he is ignorant.