You will never lose a battle if you know your own situation as well as that of the enemy.

The enemy of a father will never be friends of his son.

If you want to please, never say things are going well.

As long as the words in your mouth, it is your own; when they are once spoken, they are another’s.

Never lose faith in anyone you meet, for you may need it, when you feel defeat.

Your enemy is not the one who harms you, but the one who makes you evil.