Mathematics is not a spectator sport—you have to engage with it to appreciate its beauty.

We're not interested in taking a substantial chance of taking a lot of very decent people back to 'Go' so we can have one more zero on our net worth.

You are too generous to trifle with me. If your feelings are still what they were last April, tell me so at once. My affections and wishes are unchanged, but one word from you will silence me on this subject forever.

头脑不是要被填满的容器，而是需要被点燃的火种。