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對天資在中等程度以上的人，可以和他談論高深的學問；而對于中等以下天資的人，則不可以和他談論高深的學問。

我和珍妮形影不離。

真正的進步用收成和棲息地共同衡量成功。

I'm not interested in making beautiful things. I'm interested in making things that make you think.

Freedom is not merely the opportunity to do as one pleases; neither is it merely the opportunity to choose between set alternatives. Freedom is, first of all, the chance to formulate the available choices, to argue over them—and then, the opportunity to choose.

優化是在給定約束條件下做出最佳決策的藝術。

一本書就是你手中握著的夢想。