永远挑战现状——这就是进步的方式。
我们不是从祖先那里继承了地球,而是从子孙那里借来的。
As to the gods, I do not know whether they exist or not, or what they are like.
在词语之间的沉默中,真相常常存在。
The more we learn about black holes, the more we realize how much we still don’t know.