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.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
数学不是关于数字、方程、计算或算法的：它是关于理解的。
唯一能让你成为赢家的是你的毅力。