The only true heroism in the world is to see the world as it is and still love it.

宇宙的扭曲面——黑洞、虫洞、奇点和时间扭曲——才是真正的精彩所在。

"The past is a foreign country; they do things differently there."

数学是人类精神最美丽和最强大的创造。

写作的行为是一种乐观的行为。如果你觉得它不重要，你就不会费心去做。