Hearts are the depositaries of secrets, lips their locks, and tongues their keys.
The hearts of the wise are the fortresses of secrets.
DECEIT
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.