Arabian Wisdom, by John Wortabet, , at sacred-texts.com
To recompense good for good is a duty.
Neglect of recompense is contemptible.
If a man do you a favour recompense him, and if you are unable to do so, pray for him.
The worst kind of recompense is to requite evil for good.
Reproach faults by kindness, and requite evil by good.
There is no glory in revenge.
Meet insult by insult, and honour by honour. Evil can be repelled only by evil.
What you put into the pot you will take out in the ladle.
He who plays with a cat must bear its scratches.
He who lives in a house of glass should not throw stones at people.
Sins may lurk, but God deals heavy blows.