Oh life, you should never had begun, but since you did, you should never end
Two kinds of people are good at foreseeing danger: those who have learned at their own expense, and the clever people who learn a great deal at the expense of others.
Better mad with the rest of the world than wise alone.
A wise prince must never take things easy in times of peace.
Leave your luck while still winning.
It is profound philosophy to sound the depths of feeling and distinguish traits of character. Men must be studied as deeply as books.