If people did not sometimes do silly things, nothing intelligent would ever get done.

老兵不死，只是凋零。

"The best way to predict the future is to invent it."

课程从来不是简单的中立知识集合，它总是选择性传统的一部分，是某些人或群体对合法知识的愿景。

Chemistry is the art of manipulating matter at the molecular level, and catalysis is its most powerful brush.

经济理论只是一套构建人造世界的指令。