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。
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.
The best way to avoid mistakes is to gain experience.
管理的主要目标应该是确保雇主的最大繁荣，同时确保每位员工的最大繁荣。