数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。

In the end, that's what this election is about. Do we participate in a politics of cynicism or a politics of hope?

每个人的生命都是一座档案库。

I don't have any sense of myself except as an actor.

"We are all astronauts on a little spaceship called Earth."

健康的国民是一个国家能拥有的最大财富。