当我们自由行动时，为了行动本身而不是为了其他动机，我们学会变得比我们原来更多。
经济发展的关键不是让价格正确，而是让制度正确。
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.
One of the strongest motives that lead men to art and science， is escape from everyday life with its painful crudity and hopeless dreariness， such men make this cosmos and its construction in the pivot of their emotional life， in ordered to find the peace and the security， which they cannot find in the narrow whirlpool of personal experience.
The essence of computer science is the study of algorithms and their efficiency.
Reality is always more fantastic than fiction.
Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country.
不要看时钟；做它所做的。继续前进。