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I've been waiting more than 30 years to say this: "Dad, I always told you I'd come back and get my degree." I want to thank Harvard for this timely honor. I'll be changing my job next year…and it will be nice to finally have a college degree on my resume.

在數(shù)學(xué)中，提出問題的藝術(shù)必須比解決問題更有價值。

切勿用權(quán)力去壓制你認為不利的意見，因為如果你發(fā)表意見時也會遭到壓制。