King's Kung-Fu& Tai Chi

Art of War 10.31

The Art of War (孫子兵法), Terrain 地形篇

故曰知彼知己勝乃不殆知地知天勝乃可全

Hence the saying: If you know the enemy and know yourself, your victory will not stand in doubt;

if you know Heaven and know Earth,

you may make your victory complete.

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

Lionel Giles's notes

Capt. Calthrop makes the saying end here, which cannot be justified.

天 and 地 are transposed for the sake of the jingle between 天 and 全. The original text, however, has 知天知地, and the correction has been made from the T‘ung Tien.

As opposed to 勝之半, above. The original text has 勝乃不窮, the corruption being perhaps due to the occurrence of 不窮 in the preceding sentence. Here, however 不窮 would not be synonymous with 不困, but equivalent to 不可以窮 “inexhaustible,” “beyond computation.” Cf. V. § 11. The T‘ung Tien has again supplied the true reading. Li Ch‘üan sums up as follows: 人事天時地利三者同知則百戰百勝 “Given a knowledge of three things—the affairs of man, the seasons of heaven and the natural advantages of earth—, victory will invariably crown your battles.”

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