It is said that if you know your enemies and know yourself, you will not be imperiled in a hundred battles; if you do not know your enemies but do know yourself, you will win one and lose one; if you do not know your enemies nor yourself, you will be imperiled in every single battle.
Sun TzuThe difficulty of tactical maneuvering consists in turning the devious into the direct, and misfortune into gain.
Sun TzuIf those who are sent to draw water begin by drinking themselves, the army is suffering from thirst.
Sun Tzu