The essence of mathematics is not to make simple things complicated, but to make complicated things simple.

不能言说之事，必须保持沉默。

I keep thinking about this river somewhere, with the water moving really fast. And these two people in the water, trying to hold onto each other, holding on as hard as they can, but in the end it’s just too much. The current’s too strong. They’ve got to let go, drift apart.

有人质疑巴菲特的投资策略只是运气好而已，他讲了一个有关机率的故事回答它们

We choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard, because that goal will serve to organize and measure the best of our energies and skills, because that challenge is one that we are willing to accept, one we are unwilling to postpone, and one which we intend to win, and the others, too.

做数学就是参与发现与猜想、直觉与灵感的过程。