To speak of an effective educational programme leads at once, however, to an important aspect of the Montessori system, quite aside from its relation to the kindergarten, with which this Introduction must now deal. This is the social aspect, which finds its explanation in Dr. Montessori's own story of her first school. In any discussion of the availability of the Montessori system in English and American schools—particularly in American public schools and English "Board" schools—two general conditions under which Dr. Montessori did her early work in Rome should be borne in mind. She had her pupils almost all day long, practically controlling their lives in their waking hours; and her pupils came for the most part from families of the laboring class. We cannot expect to achieve the results Dr. Montessori has achieved if we have our pupils under our guidance only two or three hours in the morning, nor can we expect exactly similar results from children whose heredity and experience make them at once more sensitive, more active, and less amenable to suggestion than hers. If we are to make practical application of the Montessori scheme we must not neglect to consider the modifications of it which differing social conditions may render necessary.

The conditions under which Dr. Montessori started her original school in Rome do not, indeed, lack counterpart in large cities the world over. When one reads her eloquent "Inaugural Address" it is impossible not to wish that a "School within the Home" might stand as a centre of hopeful child life in the midst of every close-built city block. Better, of course, if there were no hive-like city tenements at all, and if every family could give to its own children on its own premises enough of "happy play in grassy places." Better if every mother and father were in certain ways an expert in child psychology and hygiene. But while so many unfortunate thousands still live in the hateful cliff-dwellings of our modern cities, we must welcome Dr. Montessori's large conception of the social function of her "Houses of Childhood" as a new gospel for the schools which serve the city poor. No matter what didactic apparatus such schools may use, they should learn of Dr. Montessori the need of longer hours, complete care of the children, closer co-operation with the home, and larger aims. In such schools, too, it is probable that the two fundamental features of Dr. Montessori's work—her principle of liberty and her scheme for sense training—will find their completest and most fruitful application.

It is just these fundamental features, however, which will be most bitterly attacked whenever the social status of the original Casa dei Bambini is forgotten. Anthropometric measurements, baths, training in personal self-care, the serving of meals, gardening, and the care of animals we may hear sweepingly recommended for all schools, even for those with a three-hour session and a socially favored class of pupils; but the need for individual liberty and for the training of the senses will be denied even in the work of schools where the conditions correspond closely to those at San Lorenzo. Of course no practical educator will actually propose bathtubs for all schools, and no doubt there will be plenty of wise conservatism about transferring to a given school any function now well discharged by the homes that support it. The problems raised by the proposal to apply in all schools the Montessori conception of discipline and the Montessori sense-training are really more difficult to solve. Is individual liberty a universal educational principle, or a principle which must be modified in the case of a school with no such social status as that of the original "House of Childhood"? Do all children need sense training, or only those of unfavorable inheritance and home environment? No serious discussion of the Montessori system can avoid these questions. What is said in answer to them here is written in the hope that subsequent discussion may be somewhat influenced to keep in view the really deciding factor in each case—the actual situation in the school.

There is occasion enough in these questions, to be sure, for philosophical and scientific argument. The first question involves an ethical issue, the second a psychological issue, and both may be followed through to purely metaphysical issues. Dr. Montessori believes in liberty for the pupil because she thinks of life "as a superb goddess, ever advancing to new conquests." Submission, loyalty, self-sacrifice seem to her, apparently, only incidental necessities of life, not essential elements of its eternal form. There is obvious opportunity here for profound difference of philosophic theory and belief. She seems to hold, too, that sense perception forms the sole basis for the mental and hence for the moral life; that "sense training will prepare the ordered foundation upon which the child may build up a clear and strong mentality," including, apparently, his moral ideals; and that the cultivation of purpose and of the imaginative and creative capacities of children is far less important than the development of the power to learn from the environment by means of the senses. These views seem to agree rather closely with those of Herbart and to some extent with those of Locke. Certainly they offer material for both psychological and ethical debate. Possibly, however, Dr. Montessori would not accept the views here ascribed to her on the evidence of this book; and in any case these are matters for the philosopher and the psychologist. A pedagogical issue is never wholly an issue of high principle.

Can it reasonably be maintained, then, that an actual situation like that in the first "House of Childhood" at Rome is the only situation in which the Montessori principle of liberty can justifiably find full application? Evidently the Roman school is a true Republic of Childhood, in which nothing need take precedence of the child's claim to pursue an active purpose of his own. Social restraints are here reduced to a minimum; the children must, to be sure, subordinate individual caprice to the demands of the common good, they are not allowed to quarrel or to interfere with each other, and they have duties to perform at stated times; but each child is a citizen in a community governed wholly in the interests of the equally privileged members thereof, his liberty is rarely interfered with, he is free to carry out his own purposes, and he has as much influence in the affairs of the commonwealth as the average member of an adult democracy. This situation is never duplicated in the home, for a child is not only a member of the family, whose interests are to be considered with the rest, but literally a subordinate member, whose interests must often be frankly set aside for those of an adult member or for those of the household itself. Children must come to dinner at dinner time, even if continued digging in the sand would be more to their liking or better for their general development of muscle, mind, or will. It is possible, of course, to refine on the theory of the child's membership in the family community and of the right of elders to command, but practically it remains true that the common conditions of family life prohibit any such freedom as is exercised in a Montessori school. In the same way a school of large enrollment that elects to cover in a given time so much work that individual initiative cannot be trusted to compass it, is forced to teach certain things at nine o'clock and others at ten, and to teach in groups; and the individual whose life is thus cabined and confined must get what he can. For a given school the obvious question is, Considering the work to be done in the time allowed, can we give up the safeguards of a fixed programme and group teaching? The deeper question lies here: Is the work to be done in itself so important that it is worth while to have the children go through it under compulsion or on interest induced by the teacher? Or to put it another way: May not the work be so much less important than the child's freedom that we had better trust to native curiosity and cleverly devised materials anyway and run the risk of his losing part of the work, or even the whole of it?

For schools beyond the primary grade there will be no doubt as to the answer to this question. There are many ways in which school work may safely be kept from being the deadening and depressing process it so often is, but the giving up of all fixed and limited schedules and the prescriptions of class teaching is not one of them. Even if complete liberty of individual action were possible in schools of higher grade, it is not certain that it would be desirable: for we must learn to take up many of our purposes in life under social imperative. But with young children the question becomes more difficult. What work do we wish to make sure that each child does? If our schools can keep but half a day, is there time enough for every child to cover this work without group teaching at stated times? Is the prescription and restraint involved in such group teaching really enough to do the children any harm or to make our teaching less effective? Can we not give up prescription altogether for parts of the work and minimise it for others? The general question of individual liberty is thus reduced to a series of practical problems of adjustment. It is no longer a question of total liberty or no liberty at all, but a question of the practical mediation of these extremes. When we consider, furthermore, that the teacher's skill and the attractiveness of her personality, the alluring power of the didactic apparatus and the ease with which it enables children to learn, to say nothing of a cheerful and pleasant room and the absence of set desks and seats, may all work together to prevent scheduled teaching in groups from becoming in the least an occasion for restraint, it is plain that in any given school there may be ample justification for abating the rigour of Dr. Montessori's principle of freedom. Every school must work out its own solution of the problem in the face of its particular conditions.

The adoption of sense-training would seem to be much less a matter for variable decision. Some children may need less than others, but for all children between the ages of three and five the Montessori material will prove fascinating as well as profitable. A good deal of modern educational theory has been based on the belief that children are interested only in what has social value, social content, or "real use"; yet a day with any normal child will give ample evidence of the delight that children take in purely formal exercises. The sheer fascination of tucking cards under the edge of a rug will keep a baby happy until any ordinary supply of cards is exhausted; and the wholly sensory appeal of throwing stones into the water gives satisfaction enough to absorb for a long time the attention of older children—to say nothing of grown-ups. The Montessori apparatus satisfies sense hunger when it is keen for new material, and it has besides a puzzle-interest which children eagerly respond to. Dr. Montessori subordinates the value of the concrete mental content her material supplies to its value in rendering the senses more acute; yet it is by no means certain that this content—purely formal as it is—does not also give the material much of its importance. Indeed, the refinement of sensory discrimination may not in itself be particularly valuable. What Professor G. M. Whipple says on this point in his Manual of Menial and Physical Tests (p. 130) has much weight:

The use of sensory tests in correlation work is particularly interesting. In general, some writers are convinced that keen discrimination is a prerequisite to keen intelligence, while others are equally convinced that intelligence is essentially conditioned by "higher" processes, and only remotely by sensory capacity—barring, of course, such diminution of capacity as to interfere seriously with the experiencing of sensations, as in partial deafness or partial loss of vision. While it is scarcely the place here to discuss the evolutionary significance of discriminative sensitivity, it may be pointed out that the normal capacity is many times in excess of the actual demands of life, and that it is consequently difficult to understand why nature has been so prolific and generous; to understand, in other words, what is the sanction for the seemingly hypertrophied discriminative capacity of the human sense organs. The usual "teleological explanations" of our sensory life fail to account for this discrepancy. Again, the very fact of the existence of this surplus capacity seems to negative at the outset the notion that sensory capacity can be a conditioning factor in intelligence—with the qualification already noted.

It is quite possible that the real pedagogical value of the Montessori apparatus is due to the fact that it keeps children happily engaged in the exercise of their senses and their fingers when they crave such exercise most and to the further fact that it teaches them without the least strain a good deal about forms and materials. These values are not likely to be much affected by differing school conditions.

In the use of the material for sense-training, English and American teachers may find profit in two general warnings. First, it should not be supposed that sense training alone will accomplish all that Dr. Montessori accomplishes through the whole range of her school activities. To fill up most of a morning with sense-training is to give it (except perhaps in the case of the youngest pupils) undue importance. It is not even certain that the general use of the senses will be much affected by it, to say nothing of the loss of opportunity for larger physical and social activity. Second, the isolation of the senses should be used with some care. To shut off sight is to take one step toward sleep, and the requirement that a child concentrate his attention, in this situation, on the sense perceptions he gets by other means than vision must not be maintained too long. No small strain is involved in mental action without the usual means of information and control.