The best way to keep a secret is to never have one.

教育是我们所有能力的和谐发展。

Though the water running in the fountain be every one's, yet who can doubt, but that in the pitcher is his only who drew it out?

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。