The dead are not absent. They are just invisible.

我时刻准备着学习，但是我不喜欢别人给我上课。

Every mathematical problem is a window into a new world of understanding.

发现的喜悦是科学家们前进的动力。

数学研究是所有自然现象精确知识不可或缺的基础。

The journey of scientific discovery is filled with challenges, but it is also incredibly rewarding.

在量子引力的领域，时空的结构是由纠缠的线编织而成的。