静默时就能思考，说话时就能教导人，有符合道义的行为就能成就事业，如果这三者交替运用，就能成为圣人。
In productive thinking, the transition from blind manipulation to understanding is crucial.
The most difficult thing is to be simple.
学校必须是孩子生活的地方，而不仅仅是为生活做准备的地方。
Learning is not simply the accumulation of knowledge but the transformation of understanding.