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After victory you have more enemies.

You must not fight too often with one enemy, or you will teach him all your tricks of war

So long as governments set the example of killing their enemies, private citizens will occasionally kill theirs.

The best weapon against an enemy is another enemy

I destroy my enemies when I make them my friends

I choose my friends for their good looks, my acquaintances for their good characters, and my enemies for their intellects. A man cannot be too careful in the choice of his enemies.