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Art of War 1.3

The Art of War (孫子兵法), Laying Plans 計篇

故經之以五校之以計而索其情

The art of war, then, is governed by five constant factors, to be taken into account in one’s deliberations, when seeking to determine the conditions obtaining in the field.

Lionel Giles (1910), Sun Tzŭ on the Art of War (1910), with Giles' notes — public domain.

Lionel Giles's notes

The old text of the T‘ung Tien has 故經之以五校之計, etc. Later editors have inserted 事 after 五, and 以 before 計. The former correction is perhaps superfluous, but the latter seems necessary in order to make sense, and is supported by the accepted reading in § 12, where the same words recur. I am inclined to think, however, that the whole sentence from 校 to 情 is an interpolation and has no business here at all. If it be retained, Wang Hsi must be right in saying that 計 denotes the “seven considerations” in § 13. 情 are the circumstances or conditions likely to bring about victory or defeat. The antecedent of the first 之 is 兵者; of the second, 五. 校 contains the idea of “comparison with the enemy,” which cannot well be brought out here, but will appear in § 12. Altogether, difficult though it is, the passage is not so hopelessly corrupt as to justify Capt. Calthrop in burking it entirely.

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Data: English Wikisource (Public domain texts; transcription CC BY-SA 4.0). Retrieved 2026-10-22.