如果你停下来听一个音乐家或街头艺人表演超过一分钟，你就欠他们一美元。

Love is the most important thing in the world.

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.

理解感知的神经基础是理解我们如何体验世界的关键。