The beauty of physics lies in its ability to explain the simplest phenomena with the most profound theories.

解析：知行工夫本不可离。

The training and improvement of labor are effective ways to increase productivity.

我的生命是有限的，而知识是无限的。用有限的生命去追求无限的知识，是很危险的！

我不是一个放弃梦想的人。