"We should rather laugh than weep at human life."

"We should envy no one, for good men do not deserve envy, and as for the bad, the more they prosper, the more they harm themselves."

"No pleasure is a bad thing in itself; but the means by which certain pleasures are gained bring troubles many times greater than the pleasures."

"The quantity of pleasure is to be judged by the quantity of pain it removes."

"We should heal our misfortunes by the recollection of our past joys and by the acknowledgment that it is impossible to undo what has been done."