If you have an enemy, then learn and know your enemy, don't just be mad at him or her.
Sentiment: NEGATIVE
You can learn from anyone even your enemy.
I ain't mad at anybody. I don't have any enemies.
Observe your enemies, for they first find out your faults.
I'm my own worst enemy and I know that.
No enemy is worse than bad advice.
You must not fight too often with one enemy, or you will teach him all your art of war.
There are times when you have to face your enemies, sit down and deal with it.
In order to have an enemy, one must be somebody. One must be a force before he can be resisted by another force. A malicious enemy is better than a clumsy friend.
One never really knows who one's enemy is.
We must, all of us, learn actually not to have enemies, but only confused adversaries who are ourselves in disguise.