The statesman， who should attempt to direct private people in what manner they ought to employ their capitals， would not only load himself with a most unnecessary attention but assume an authority which could safely be trusted， not only to no single person， but to no council or senate whatever， and which would nowhere be so dangerous as in the hands of a man who had folly and presumption enough to fancy himself fit to exercise it.

Data structures are the backbone of efficient algorithms.

You have to have confidence in your ability, and then be tough enough to follow through.

如果你无法改变现状，那就改变你的心态。

数学的美在于它揭示隐藏的对称性和真理的能力。

创新是企业发展的动力，没有创新就没有未来。