没有方法能使时钟为我敲已过去了的钟点。

The Internet is not omnipotent, but it is changing everything.

音乐让我学会了坚持和感恩。

Freedom is not merely the opportunity to do as one pleases; neither is it merely the opportunity to choose between set alternatives. Freedom is, first of all, the chance to formulate the available choices, to argue over them—and then, the opportunity to choose.

The beauty of mathematics is that it is one of the few areas of human endeavor where absolute truth can be known.