5.22

Chapter: Energy 5.22
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Translation:

When he utilizes 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.

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Commentary

With the ability to sustain forward motion, a group of soldiers or a whole army gains momentum that is difficult to stop.