"Beware the barrenness of a busy life."
"The greater the difficulty, the more the glory in surmounting it."
"Those who aim at great deeds must also suffer greatly."
"I only wish that ordinary people had an unlimited capacity for doing harm; then they might have an unlimited power for doing good."
"Any man may easily do harm, but not every man can do good to another."
"Do not spoil what you have by desiring what you have not; remember that what you now have was once among the things you only hoped for."
"He who is to be a good ruler must have first been ruled."
"The two enemies of human happiness are pain and boredom."
"All wealth is the product of labor."
"There is a difference between happiness and wisdom: he that thinks himself the happiest man is really so; but he that thinks himself the wisest is generally the greatest fool."