The beauty of physics lies in its ability to explain the complex with the simple.

解释：过去和现在风俗不同，为什么一定要效仿古代？

Happiness resides not in possessions and not in gold； the feeling of happiness dwells in the soul.

我们必须像投资技术一样投资于人。

If your process harms the environment, you're not tanning—you're taking.