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

21. Though according to my estimate the soldiers of Yüeh exceed our own

in number, that shall advantage them nothing in the matter of victory. I say then that victory can be achieved. [Alas for these brave words! The long feud between the two states ended in 473 B.C. with the total defeat of Wu by Kou Chien and its incorporation in Yüeh. This was doubtless long after Sun Tzŭ’s death. With his present assertion compare IV. § 4. Chang Yu is the only one to point out the seeming discrepancy, which he thus goes on to explain: "In the chapter on Tactical Dispositions it is said, ‘One may _know_ how to conquer without being able to _do_ it,’ whereas here we have the statement that ‘victory’ can be achieved.’ The explanation is, that in the former chapter, where the offensive and defensive are under discussion, it is said that if the enemy is fully prepared, one cannot make certain of beating him. But the present passage refers particularly to the soldiers of Yüeh who, according to Sun Tzŭ’s calculations, will be kept in ignorance of the time and place of the impending struggle. That is why he says here that victory can be achieved."]