Sun-tzu

"A military operation involves deception. Even though you are competent, appear to be incompetent. Though effective, appear to be ineffective. "

"Be extremely subtle, even to the point of formlessness. Be extremely mysterious, even to the point of soundlessness. Thereby you can be the director of the opponent's fate. "

"Invincibility lies in the defense the possibility of victory in the attack. One defends when his strength is inadequate he attacks when it is abundant. "

"Opportunities multiply as they are seized. "

"The best victory is when the opponent surrenders of its own accord before there are any actual hostilities...It is best to win without fighting. "

"To fight and conquer in all your battles is not supreme excellence supreme excellence consists in breaking the enemy's resistance without fighting. "

"Victorious warriors win first and then go to war, while defeated warriors go to war first and then seek to win. "