Let the punishment be proportionate to the offense.

Courage is virtue which champions the cause of right.

Probability is the very guide of life.

Friendship is the only thing in the world concerning the usefulness of which all mankind are agreed.

Six mistakes mankind keeps making century after century: Believing that personal gain is made by crushing others; Worrying about things that cannot be changed or corrected; Insisting that a thing is impossible because we cannot accomplish it; Refusing to set aside trivial preferences; Neglecting development and refinement of the mind; Attempting to compel others to believe and live as we do.

To be ignorant of what occurred before you were born is to remain always a child.

In a promise, what you thought, and not what you said, is always to be considered.