Self-help is the best help
It is foolish to try to imitate the skills of others.
The quarrels of friends are the opportunities of foes.
You will only injure yourself if you take notice of despicable enemies.
If you are wise you won't be deceived by the innocent airs of those whom you have once found to be dangerous.
If you are a friend, why do you bite me so hard? If an enemy, why do you fawn on me?