做数学就是参与发现与猜想、直觉与灵感的过程。

——回忆首次前赴檀香山

The value of a commodity, or the quantity of any other commodity for which it will exchange, depends on the relative quantity of labor which is necessary for its production, and not on the greater or less compensation which is paid for that labor.

我们有责任在应对气候变化的同时提供可靠且负担得起的能源。