The true discovery of America is before us. The true fulfillment of our spirit, of our people, of our mighty and immortal land, is yet to come.

Natural experiments can provide valuable insights into economic questions.

Innovation is not just about creating new products; it's about reimagining how we solve problems.

"The world is full of magic things, patiently waiting for our senses to grow sharper."

领导力在于激励人们去做他们从未想过自己能做的事情。

测量可测量的，并使不可测量的成为可测量的。

We cannot know the cause, and therefore the effect, by reason alone.