What we can do is simply to concentrate all our available strength, keep a close watch on the enemy, and obtain reinforcements.
[This is an obscure sentence, and none of the commentators succeed in squeezing very good sense out of it. I follow Li Ch’uan, who appears to offer the simplest explanation: "Only the side that gets more men will win." Fortunately we have Chang Yu to expound its meaning to us in language which is lucidity itself: "When the numbers are even, and no favourable opening presents itself, although we may not be strong enough to deliver a sustained attack, we can find additional recruits amongst our sutlers and camp-followers, and then, concentrating our forces and keeping a close watch on the enemy, contrive to snatch the victory. But we must avoid borrowing foreign soldiers to help us." He then quotes from Wei Liao Tzŭ, ch. 3: "The nominal strength of mercenary troops may be 100,000, but their real value will be not more than half that figure."]
- He who exercises no forethought but makes light of his opponents is sure to be captured by them.
[Ch’en Hao, quoting from the Tso Chuan, says: "If bees and scorpions carry poison, how much more will a hostile state! Even a puny opponent, then, should not be treated with contempt."]
- If soldiers are punished before they have grown attached to you, they will not prove submissive; and, unless submissive, then will be practically useless. If, when the soldiers have become attached to you, punishments are not enforced, they will still be useless.
- Therefore soldiers must be treated in the first instance with humanity, but kept under control by means of iron discipline.
[Yen Tzŭ [B.C. 493] said of Ssu-ma Jang-chu: "His civil virtues endeared him to the people; his martial prowess kept his enemies in awe." Cf. Wu