Sun Tzu - Know Yourself and Know your Enemy 01

IF YOU KNOW THE ENEMY, AND KNOW YOURSELF YOU NEED NOT FEAR THE OUTCOME OF A HUNDRED BATTLES. IF YOU KNOW YOURSELF, BUT NOT YOUR ENEMY, FOR EVERY VICTORY GAINED, YOU WILL SUFFER A DEFEAT. IF YOU KNOW NEITHER YOUR ENEMY, NOR YOURSELF, YOU WILL SUFFER A DEFEAT, EVERY TIME!