More men come to doom through dirty profits than are kept by them.
Not all things are to be discovered; many are better concealed.
Rather throw away that which is dearest to you, your own life, than turn away a good friend.
Do not grieve yourself too much for those you hate, nor yet forget them utterly.
No yield to the dead! Never stab the fighter when he's down. Where's the glory, killing the dead twice over?
What you can't enforce, do not command.