If I am walking with two other men, each of them will serve as my teacher. I will pick out the good points of the one and imitate them, and the bad points of the other and correct them in myself.

It is not the failure of others to appreciate your abilities that should trouble you, but rather your failure to appreciate theirs.

The man who moves a mountain begins by carrying away small stones.

When anger rises, think of the consequences.

It is more shameful to distrust our friends than to be deceived by them.

The hardest thing of all is to find a black cat in a dark room, especially if there is no cat.