In the world of physics, we often find that the simplest questions are the hardest to answer.
在物理学的世界里,我们经常发现最简单的问题最难回答。
不要让昨天占据今天太多时间。
The best way to predict the future is to create it.
The world is always right. In its judgments, it is always right. For it is not the world that judges, but we.