《尉缭子·武议》
胜利的军队象水一样，水看来是最柔弱的，但它所冲击的地方，山陵也会崩塌，这不是别的原因，而是由于水总是流向一个方向，不断冲刷的结果。
胜兵似水。夫水，至柔弱者也，然所触，丘陵必为之崩，无异也，性专而触诚也。
The victorious army is like water, and water seems to be the weakest, but where it strikes, the mountains and hills will collapse, and the reason is not other than the result of water ever flowing toward one direction, and ever washing.