King's Kung-Fu& Tai Chi

Art of War 5.22

The Art of War (孫子兵法), Energy 埶篇

任埶者其戰人也如轉木石木石之性安則靜危則動方則止圓則行

When he utilises combined energy, his fighting men become as it were like unto rolling logs or stones. For it is the nature of a log or stone to remain motionless on level ground, and to move when on a slope; if four-cornered, to come to a standstill, but if round-shaped, to go rolling down.

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

Lionel Giles's notes

Ts‘ao Kung calls this 任自然勢 “the use of natural or inherent power.” Capt. Calthrop ignores the last part of the sentence entirely. In its stead he has: “So await the opportunity, and so act when the opportunity arrives” — another absolutely gratuitous interpolation. The T‘ung Tien omits 任.

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