Reveal not every secret you have to a friend, for how can you tell but that friend may hereafter become and enemy. And bring not all mischief you are able to upon an enemy, for he may one day become your friend.

To tell a falsehood is like the cut of a saber: for though the wound may heal, the scar of it will remain.

Whoever has his foe at his mercy, and does not kill him, is his own enemy

Whoever acquires knowledge but does not practice it is as one who ploughs but does not sow.

If thou art of elephant-strength or of lion-claw, still peace is, in my opinion, better than strife.

Forgiveness is commendable, but apply not ointment to the wound of an oppressor.

To use the hands in making quicklime into mortar is better than to cross them on the breast in attendance on a prince.