<P> Chapter 7, passage 18: "侵掠 如 火, 不動 如山 "In raiding and plundering be like fire, be immovable like a mountain . </P> <P> The complete verse (chapter 7 passages 17--19) is "故 其 疾 如 風 、 其 徐如林 、 侵掠 如 火 、 難 知 如 陰 、 不動 如山 、 動 如 雷霆", and as such it is notable that fūrinkazan omits "難 知 如 陰" Be as hard to know as the shadow and "動 如 雷霆" Move as fast as lightning . </P> <P> The well - known four - character version appears to be a later invention . Historian Masaya Suzuki, citing the work of an authority on the military insignia of the time, notes that there is no evidence in the historical record for the four - character phrase, and points out that it became popular with the publication of a historical novel of the same name by Yasushi Inoue in 1953 . </P>

As fast as the wind as quiet as the forest as daring as fire and immovable as the mountain