人类是一种非常奇特的生物。他认为自己有一个灵魂，但他就是一个灵魂；他有一个身体。

"Books are the way that we communicate with the dead. The way that we learn lessons from those who are no longer with us, that humanity has built on itself, progressed, made knowledge incremental rather than something that has to be relearned, over and over."

如果一件事情对你很重要，即使成功的概率很小，你也应该去做。