The light and easily moved tables, chairs, and armchairs permit a child to choose the most convenient position. He can make himself comfortable rather than sit in one place, and this is at once an indication of his inner freedom and a further means of education. If a child's awkward movements make a chair fall over with a crash, he has an obvious proof of his own incapacity. A similar movement among desks would have passed unnoticed. A child thus has a means of correcting himself, and when he has done so he has proof positive of it: the chairs wand tables remain silent and unmoved where they are. When this has happened one can say that the child has leaned how to move about.