当我们为后代考虑而采石时，石头就变成了桥梁，而不仅仅是资源。

The chief beauty about time is that you cannot waste it in advance. The next year, the next day, the next hour are lying ready for you, as perfect, as unspoiled, as if you had never wasted or misapplied a single moment in all your life. You can turn over a new leaf every hour if you choose.

山溪里的水随着季节常涨常退，不明事理的小人反复无常。

遵循道就是像水一样流动，滋养万物而不争。

理解就是感知模式。