If you pick up a starving dog and make him prosperous， he will not bite you. This is the principal difference between a dog and a man.
如果你收养了一只饥饿可怜的狗，并且让它舒适顺利，它将不会咬你，这便是一个人与一只狗之间最主要的差别。
Algorithms are the poetry of computation. Every algorithm has a story to tell.
Courage is grace under pressure.
The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
The only thing more dangerous than a man with nothing to lose is a man with everything to gain.