The delusion of invincibility can never grow up in the mind of anyone except one who has never met a strong antagonist.

Nobody will admit his own mental inferiority, even to himself.

A person who is never duped cannot be a friend.

THE MAN WHO MAKES NO MISTAKES USUALLY MAKES NOTHING

The true manipulator never has a reputation for manipulating.

No innocent person ever has an alibi.

Never ascribe to an opponent motives meaner than your own.

I hate an enemy who doesn’t make mistakes.

If a man never contradicts himself, the reason must be that he virtually never says anything at all.

No man is more unhappy than he who never faces adversity. For he is not permitted to prove himself.

If any man ceases to attack me, I never remember the past against him.

Never tell your enemy he is doing the wrong thing.

I never thought an angry person valiant:
Virtue is never aided by a vice.

Never offend an enemy in a small way.