The more determinedly I exist, as myself, within the conditions of the time, the more clearly I shall hear the language of the past, the nearer I shall feel the breath of universal history.

自由不是让你想做什么就做什么，自由是教你不想做什么，就可以不做什么。

In the end， we will remember not the words of our enemies， but the silence of our friends.

我们在能源领域面临的挑战不仅仅是技术性的；它们深深植根于人性。

When I was in college， I wanted to be involved in things that would change the world.

Great deeds are usually wrought at great risks.

目的赋予心理活动意义。