When your opponent gives you an opening, be swift as a hare.

Thus those skilled in war subdue the enemy's army without battle .... They conquer by strategy.

Attack like the Fire and be still as the Mountain

If you know both yourself and your enemy, you can win a hundred battles without a single loss.

And therefore those skilled in war bring the enemy to the field of battle and are not brought there by him.

Attack where he is unprepared; sally forth when he does not expect you.

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