We shall never prevent the abuse of power if we are not prepared to limit power in a way which occasionally may prevent its use for desirable purposes.

I am not afraid of storms，for I am learning how to sail my ship.

The Langlands program is a reflection of the beauty and depth of mathematical thought.

We will laugh at the laughable， and will not be able to refrain from laughing.

最重要的政治美德是节制，即能够以促进共同利益的方式平衡相互竞争的利益和价值观。

四元数的诞生，如同几何、代数、形而上学和诗歌这四位父母的奇特后代。