Every individual has a place to fill in the world and is important in some respect whether he chooses to be so or not.

教师必须既是学生的研究者，也是学科的研究者。

The thought of death should usher us towards whatever happens to matter most to us; it should lend us the courage to pursue the way of life we value in our hearts.

量子世界不仅比我们想象的更奇怪，而且比我们能够想象的还要奇怪。