The progress of mathematics is measured by the number of problems it can solve.

《与邹鲁的谈话》（1919年6月）

To be fond of dancing was a certain step towards falling in love.

We are all alone in the universe, and the only thing that can bridge the gap between us is love.

We are not just robots made of meat.

创造力是具有严肃后果的一种游戏形式。