The Art of War by active 6th century B.C. Sunzi

array and on the point of marching to the attack, I should say: "Begin by seizing something which your opponent holds dear; then he will be amenable to your will." [Opinions differ as to what Sun Tzŭ had in mind. Ts’ao Kung thinks it is "some strategical advantage on which the enemy is depending." Tu Mu says: "The three things which an enemy is anxious to do, and on the accomplishment of which his success depends, are: (1) to capture our favourable positions; (2) to ravage our cultivated land; (3) to guard his own communications." Our object then must be to thwart his plans in these three directions and thus render him helpless. [Cf. III. § 3.] By boldly seizing the initiative in this way, you at once throw the other side on the defensive.]