我想把美国从恐惧中解放出来。我希望人们害怕真正可怕的事情，比如战争和饥荒，而不是因为邻居有不同宗教信仰就害怕他。
I want to liberate America from fear. I want people to be afraid of the things that are really scary, like war and famine, not their neighbor because he has a different religion.
发现可能性的唯一方法是超越它们进入不可能。
Making something is really hard. You have to care about it so much that you will push through all the disappointments and frustrations.
我越是坚定地作为自己存在于时代的条件中，我就越清晰地听到过去的语言，越感受到普遍历史的呼吸。
Leadership is about making tough decisions with compassion.
The search for a theory of everything is one of the most exciting and challenging quests in modern physics.
透明建立信任，而信任建立持久的关系。