The only limit to our realization of tomorrow is our doubts of today.

实现不可能的唯一途径是相信它是可能的。

你不需要是个天才才能理解宇宙。你只需要有好奇心。

If the people cannot trust their government to do the job for which it exists - to protect them and to promote their common welfare - all else is lost.

我们不需要更多标志性建筑，我们需要更多好建筑。