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一個好的數學家是能看到定理之間類比的人；一個偉大的數學家是能看到類比之間的類比的人。

"History is not the story of strangers, aliens from another realm; it is the story of us had we been born a little earlier."

The laws of physics as we know them may not be universal, but could vary from one universe to another in the multiverse.

農民是我們經濟中唯一必須以零售價購買一切，以批發價出售一切，并支付雙向運費的人。