"In the study of computational complexity, we often find that the boundaries of what is possible are defined by the limits of our imagination."

Learning is any change in a system that produces a more or less permanent change in its capacity for adapting to its environment.

选拔天下的人才，使他们胜任各自的职位

对公共事务漠不关心的代价是被恶人统治。

1983年12月，杨振宁向邓小平建议