31. 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;

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

if you know Heaven and know Earth,

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_.

you may make your victory complete.

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.”

Sun Tzŭ on the Art of War: The Oldest Military Treatise in the World · 第 313 / 458 题