The power of abstraction is that it allows us to ignore details that are not relevant to the task at hand.

In programming, everything we do is a special case of something more general -- and often we know it too quickly.

最好的东西，不会都属于你，舍掉其中一个，才能得到另外一个。选择，是人生的必行之路。

The best way to create interest in a subject is to render it worth knowing, which means to make the knowledge usable.

现代教育者的任务不是砍伐丛林，而是灌溉沙漠。

It is not shame for a man to learn that which he knows not，whatever his age.