做数学就是探索一个思想的宇宙，唯一的限制是你的想象力。

"We are all descendants of successful maters, not unsuccessful ones, and this has shaped our mating psychology in profound ways."

通达智慧，不是通过克制和严格，而是通过放任和孩童般的无忧无虑。你想了解任何事，请保持心情快乐。

Pain is not always physical; sometimes the deepest wounds are the ones we cannot see.

思考是最困难的工作，这也是为什么很少有人这么做。