"The most dangerous kind of waste is the waste we do not recognize."

Editing is the final rewrite of the script.

解释：斩草要除根，不要与祸乱沾边，就不会有祸。

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

学习新编程语言的最好方法是用它编写程序。