Space is a substance.
空间是一种物质。
I never guess. It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.
The art of progress is to preserve order amid change and to preserve change amid order.
最好的故事是那些让你思考，让你在读完很久之后仍然难以忘怀的故事。
Leadership is about inspiring others to see what they can become.
个人的就是普遍的，普遍的也是个人的。
宇宙的扭曲面——黑洞、虫洞、奇点等——对我如此吸引，因为它与日常生活中的平坦欧几里得几何如此不同。