It is profound philosophy to sound the depths of feeling and distinguish traits of character. Men must be studied as deeply as books.
Many have had their greatness made for them by their enemies.
Every fool stands convinced; and everyone convinced is a fool. The faultier a person's judgement the firmer their convictions.
It is impossible to live without brains, either one's own or borrowed.
Work is the price which is paid for reputation.
You have to appear wiser and more prudent than is required by the people you are dealing with if you want to give a high opinion of yourself.