《吴子·应变》
吴起答： 强暴的敌人前来，必须考虑它的强大，应严加防守，不要应战，待敌人傍晚撤走时，它的装载必然沉重，心理必然恐惧，退走力求迅速，必有互不联系的地方。
起对曰： 暴寇之来，必虑其强，善守勿应。彼将暮去，其装必重，其心必恐，还退务速，必有不属。
Wu Qi replied: When a violent enemy comes, it is necessary to consider its strength, defend strictly, and not to engage in battle. When the enemy retreats in the evening, its loads will inevitably be heavy, its morale will inevitably be low, and its retreat will be as quick as possible, there will inevitably be places where units become disconnected.