There are many people in England, and perhaps elsewhere, who seem to be unable to contemplate military operations for clear political objects, unless they can cajole themselves into the belief that their enemy are utterly and hopelessly vile.

A debt should be paid off till the last penny; An enemy should be destroyed without a trace.

Even a captured enemy is not to be trusted.

A ruler wishing to win should not trust a cunning enemy, even if he may be extending a hand of friendship. Because deep-rooted enmity, however, concealed, will surely come to light.

If you want to make peace with your enemy, you have to work with your enemy. Then he becomes your partner.

Be not glad at the misfortune of another, though he may be your enemy.