"To see victory only when it is within the ken of the common herd is not the acme of excellence."

"By discovering the enemy's dispositions and remaining invisible ourselves, we can keep our forces concentrated, while the enemy's must be divided."

"If your opponent is of choleric temper, seek to irritate him. Pretend to be weak, that he may grow arrogant."

"If you are strong, appear weak. If you are weak, appear strong."

"Know your enemy and know yourself and you can fight a hundred battles without disaster."