I've learned that you can't have everything and do everything at the same time.

The aim of every artist is to arrest motion, which is life, by artificial means and hold it fixed so that a hundred years later, when a stranger looks at it, it moves again since it is life.

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。