6.29

Chapter: Weak Points and Strong 6.29
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Translation:

Military tactics are like unto water; for water in its natural course runs away from high places and hastens downwards.

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Commentary

Water is moved by the natural potential energy of gravity. It goes where it will go and does not return.

There are many variables in war and what worked in one situation is not guaranteed to work elsewhere. Design the tactics for the situation rather than just ‘using what worked last time’.