Give the pupils something to do， not something to learn； and the doing is of such a nature as to demand thinking； learning naturally results.
给学生一些事情去做，而不是一些东西去学；而这些事情的性质需要思考；学习会自然而然地发生。
Every fish we take from the ocean today is a loan from our children's future.
你并不等同于他人对你的评价。
火药不仅是破坏的工具，它也能成为创造的媒介。