我不会让世界改变我的笑容。

没有所谓的空的空间或空的时间。总有东西可看，有东西可听。

The study of quantum gravity is essential for understanding the early universe.

每个政府的基础都是人民心中的某种原则或激情。

"The truth is rarely pure and never simple."

In times of change, the ability to adapt and remain agile is what separates the winners from the losers.