(2) Teach the child what is of use to him as a child.

       (Teachers College, N. Y. City.)

      In the following passage Rousseau is more specific as to the way in which the physical activities which conduce to health and the growth of mind reinforce each other. “Physical exercise teaches us to use our strength, to perceive the relation between our own and neighboring bodies, to use natural tools which are within our reach and adapted to our senses.... At eighteen we are taught in our schools the use of the lever; every village boy of twelve knows how to use a lever better than the cleverest mechanician in the academy. The lessons the scholars give one another on the playground are worth a hundredfold more than what they learn in the classroom. Watch a cat when she first comes into a room. She goes from place to place; she sniffs about and examines everything. She is not still for a moment. It is the same with a child when he begins to walk and enters, as it were, the room of the world about him. Both use sight, and the child uses his hands as the cat her nose.”

      “As man’s first natural impulse is to measure himself upon his environment, to find in every object he sees the qualities that may concern himself, so his first study is a kind of experimental physics for his own preservation. He is turned away from this, and sent to speculative studies before he has found his own place in the world. While his delicate and flexible limbs and keen senses can adjust themselves to the bodies upon which they intended to act is the time to exercise senses and limbs in their proper business—the time to learn the relation between themselves and things. Our first teachers in natural philosophy are our feet, hands, and eyes. To substitute books for them does not teach us to reason; it teaches us to use the reason of others rather than our own; it teaches us to believe much and to know little.”

      “Before you can get an art, you must first get your tools; and if you are to make good use of your tools, they must be fashioned sufficiently strong to stand use. To learn to think, we must accordingly exercise our limbs, our senses, and our bodily organs, for these are the tools of intellect. To get the best use of these tools, the body that supplies us with these tools must be kept strong and healthy. Not only is it a mistake that true reason is developed apart from the body, but it is a good bodily constitution that makes the workings of the mind easy and correct.”

      The passage shows how far Rousseau was from considering bodily development as a complete end in itself. It also indicates how far ahead he was of the psychology of his own day in his conception of the relation of the senses to knowledge. The current idea (and one that prevails too much even in our own time) was that the senses were a sort of gateway and avenue through which impressions traveled and then built up knowledge pictures of the world. Rousseau saw that they are a part of the apparatus of action by which we adjust ourselves to our environment, and that instead of being passive receptacles they are directly connected with motor activities—with the use of hands and legs. In this respect he was more advanced than some of his successors who emphasized the importance of sense contact with objects, for the latter thought of the senses simply as purveyors of information about objects instead of instruments of the necessary adjustments of human beings to the world around them.

      Consequently, while he makes much of the senses and suggests many games for cultivating them, he never makes the mere training of the senses an object on its own account. “It is not enough,” he says, “to use the senses in order to train them; we must learn to judge by their means—we cannot really see, hear, or touch except as we have learned. A merely mechanical use of the senses may strengthen the body without improving the judgment. It is all very well to swim, run, jump, whip a top, throw stones. But we have eyes and ears as well as arms and legs, and these organs are necessary for learning the use of the rest. Do not, then, merely exercise strength, but exercise the senses as the powers by which strength is guided. Make the best use of every one of them, and check the results of one by another. Measure, count, weigh, compare. Do not use force till you have estimated the resistance; let estimation of the effect always precede application of the means. Get the child interested in avoiding superfluous and insufficient efforts. If you train him to calculate the consequences of what he does and then to correct the errors of his prevision by experience, the more he does, the wiser he will become.”

      One more contrast between teaching which guides natural growth and teaching which imposes adult accomplishments should be noticed. The latter method puts a premium upon accumulating information in the form of symbols. Quantity rather than quality of knowledge is emphasized; results that may be exhibited when asked for rather than personal attitude and method are demanded. Development emphasizes the need of intimate and extensive personal acquaintance with a small number of typical situations with a view to mastering the way of dealing with the problems of experience, not the piling up of information. As Rousseau points out, the facility with which children lend themselves to our false methods is a constant source of deception to us. We know—or fancy we know—what statements mean, and so when the child uses the proper form of words, we attribute the same understanding to him. “The apparent ease with which children learn is their ruin. We fail to see that this very ease proves that they are not learning. Their shining, polished brain merely reflects, as in a mirror, the things we show them.” Rousseau describes in a phrase the defect of teaching about things instead of bringing to pass an acquaintance with the relations of the things themselves. “You think you are teaching him what the world is like; he is only learning the map.” Extend the illustration from geography to the whole wide realm of knowledge, and you have the gist of much of our teaching from the elementary school through the college.