But the mistake is almost universally made. Information being related to knowledge, as what is outward to what is inward, it is but natural that education in the West, which on principle concerns itself with what is outward, and ignores what is inward, should have always regarded, and should still regard, the supplying of information as the main function of the teacher, and the ability of the child to retail the information which has been supplied to him as a convincing proof that the work of the teacher has been successfully done. In nine schools out of ten, on nine days out of ten, in nine lessons out of ten, the teacher is engaged in laying thin films of information on the surface of the child's mind, and then, after a brief interval, in skimming these off in order to satisfy himself that they had been duly laid. He cannot afford to do otherwise. If the child, like the man, is to be "saved" by passive obedience, his teacher must keep his every action and operation under close and constant supervision. Were the information which is supplied to him allowed to descend into the subconscious strata of his being, there to be dealt with by the secret, subtle, assimilative processes of his nature, it would escape from the teacher's supervision and therefore from his control. In other words, the teacher would have abdicated his function. He must therefore take great pains to keep the processes by which the child acquires knowledge (or what passes for such) as near to the surface of his mind as possible; in rivalry of the nurse who should take so much interest in the well-being of her charges that she would not allow them to digest the food which she had given them, but would insist on their disgorging it at intervals, in order that she might satisfy herself that it had been duly given and received. It is no doubt right that the teacher should take steps to test the industry of his pupils; but the information which the child has always to keep at the call of his memory, in order that he may give it back on demand in the form in which he has received it, is the equivalent of food which its recipient has not been allowed to digest.