释义：善于用兵的人，会顺应天地的规律，与之同行。这句话强调用兵之道在于顺应自然。

A sound mind in a sound body, is a short, but full description of a happy state in this World: he that has these two, has little more to wish for; and he that wants either of them, will be little the better for anything else. Men’s happiness or misery is most part of their own making. He, whose mind directs not wisely, will never take the right way; and he, whose body is crazy and feeble, will never be able to advance in it.

可持续发展不仅仅是趋势，它是皮革鞣制的未来。