数学是一门活生生的学科，不断演变和发展。
预测未来的最好方式就是创造未来。
In the short run, the market is a voting machine but in the long run, it is a weighing machine.
Everyone has a secret world inside of them. All of the people of the world, I mean. Everybody. No matter how dull and boring they are on the outside, inside them they've all got unimaginable, magnificent, wonderful, stupid, amazing worlds. Not just one world. Hundreds of them.