Advice is judged by results, not by intentions.

Everyone has his besetting sin.

That is probable which for the most part usually comes to pass, or which is a part of the ordinary beliefs of mankind.

The mere act of believing that some wrongful course of action constitutes an advantage is pernicious.

Life without learning is death.

Friendship is nothing else than entire fellow feeling as to all things human and divine with mutual good-will and affection; and I doubt whether anything better than this, wisdom alone excepted, has been given to man.

The searching-out and thorough investigation of truth ought to be the primary study of man.