数学的历史是人类思想和进步的历史。
The history of mathematics is a history of human thought and progress.
This is the map that shows us where we're going. And this is the map that shows us where we've been. And it's never ever ugly.
成为一名演员就是成为一名生活的永久学生。
最深刻的真理往往是我们最抗拒的。
The quality of a country's institutions is the single most important determinant of its long-term economic performance.
