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.
Light is the most important material in architecture.
The PAC learning framework provides a formal way to quantify the learnability of a concept class.
Pain research is not just about alleviating suffering; it's about understanding a fundamental aspect of human biology.
We are communal histories, communal books. We are not owned or monogamous in our taste or experience.