我们从这样的假设开始：任何学科都可以以某种智力上诚实的形式有效地教给处于任何发展阶段的任何孩子。
We begin with the hypothesis that any subject can be taught effectively in some intellectually honest form to any child at any stage of development.
A publicist nowadays is a man who bores the community with the details of the illegalities of his private life.
Collaboration across industries is key to solving complex problems.
A quarry should heal the earth even as it harvests from it.