Arabian Wisdom, by John Wortabet, , at sacred-texts.com
Deceit does more harm to the deceitful than to the deceived.
If a man commit these three things they will
rise against him in judgment and punishment—aggression, perfidy, and deceit.
To be true to the perfidious is perfidy, and to deceive the deceitful is lawful.
In deceiving your neighbour be more wary than when he is trying to deceive you.
When one would deceive you, and you feign to be deceived, you have deceived him.
He who would deceive one who cannot be deceived is only deceiving himself.
He who allows himself to be deceived by what his enemy says is the greatest enemy to himself.
A wise man neither deceives nor is deceived.
If a man believe in a stone it will do him good.
Self-deception is one of the forms of folly.
Most men think well of themselves, and this is self-delusion.
Vain desires are rarely realised, but they may give comfort in sorrow or pleasure in empty hope.