Faithful are the wounds of a friend; but the kisses of an enemy are deceitful.
A liar will not be believed, even when he speaks the truth.
Don't kill the goose that lays the golden egg.
Most arguments are useless.
Do not attempt to hide things which cannot be hidden.
While I see many hoof marks going in, I see none coming out. It is easier to get into the enemy's toils than out again.