Whoever has his foe at his mercy, and does not kill him, is his own enemy.

There is no occasion for our rejoicing at a foe's death, because our own life will also not last forever.

If your enemy is hungry, give him bread to eat; and if thirsty, give him water to drink. Even if he came to kill you, give him food if he is hungry or water if he is thirsty.

Enemies' promises were made to be broken.

You will only injure yourself if you take notice of despicable enemies.

Pay attention to your enemies, for they are the first to discover your mistakes.

If thine enemy hunger, feed him; if he thirst, give him drink: for in so doing thou shalt heap coals of fire on his head.

You shall judge of a man by his foes as well as by his friends.

There's nothing like the sight Of an old enemy down on his luck.

Your worst enemy Becomes your best friend, once he's underground.