Ruskin _supra_ p. 159, _note_.) “No! if Nature gives to the child’s brain this pliability which makes it capable of receiving impressions of every kind, this is not that we may engrave on it the names of kings, dates, the technical words of heraldry, of astronomy, of geography, and all those words meaningless at his age and useless at any age, with which we oppress his sad and sterile childhood; but that all the ideas which he can conceive and which are useful to him, all those which relate to his happiness and will one day make his duty plain to him, may trace themselves there in characters never to be effaced, and may assist him in conducting himself through life in a manner appropriate to his nature and his faculties.”[136] § 21. With Rousseau, as afterwards with Froebel, education was a kind of “child-gardening.” “Plants are developed by cultivation,” says he, “men by education: On façonne les plantes par la culture, et les hommes par l’éducation” (_Ém._ j., 6). The governor, who is the child-gardener, is to aim at three things: first, he is to shield the child from all corrupting influences; second, he is to devote himself to developing in the child a healthy and strong body in which the senses are to be rendered acute by exercise; third, he is, by practice not precept, to cultivate the child’s sense of duty. § 22. In his study of children Rousseau fixed on their never-resting activity. “The failing energy concentrates itself in the heart of the old man; in the heart of the child energy is overflowing and spreads outwards; he feels in him life enough to animate all his surroundings. Whether he makes or mars it is all one to him: it is enough that he has changed the state of things, and every change is an action. If he seems by preference to destroy, this is not from mischief; but the act of construction is always slow, and the act of destruction being quicker is more suited to his vivacity.”[137] One of the first requisites in the care of the young is then to provide for the expansion of their activity. All restraints such as swaddling clothes for infants and “school” and “lessons” for children are to be entirely done away with.[138] Literary instruction must not be thought of. “There must be no other book than the world,” says Rousseau, “no other instruction than facts. The child who reads does not think, he does nothing but read, he gets no instruction; he learns words: Point d’autre livre que le monde, point d’autre instruction que les faits. L’enfant qui lit ne pense pas, il ne fait que lire; il ne s’instruit pas, il apprend les mots.” (_Ém._ iij., 181.)[139]