This fact makes it necessary for us to examine in greater detail what is meant by the social environment. We are given to separating from each other the physical and social environments in which we live. The separation is responsible on one hand for an exaggeration of the moral importance of the more direct or personal modes of control of which we have been speaking; and on the other hand for an exaggeration, in current psychology and philosophy, of the intellectual possibilities of contact with a purely physical environment. There is not, in fact, any such thing as the direct influence of one human being on another apart from use of the physical environment as an intermediary. A smile, a frown, a rebuke, a word of warning or encouragement, all involve some physical change. Otherwise, the attitude of one would not get over to alter the attitude of another. Comparatively speaking, such modes of influence may be regarded as personal. The physical medium is reduced to a mere means of personal contact. In contrast with such direct modes of mutual influence, stand associations in common pursuits involving the use of things as means and as measures of results. Even if the mother never told her daughter to help her, or never rebuked her for not helping, the child would be subjected to direction in her activities by the mere fact that she was engaged, along with the parent, in the household life. Imitation, emulation, the need of working together, enforce control. If the mother hands the child something needed, the latter must reach the thing in order to get it. Where there is giving there must be taking. The way the child handles the thing after it is got, the use to which it is put, is surely influenced by the fact that the child has watched the mother. When the child sees the parent looking for something, it is as natural for it also to look for the object and to give it over when it finds it, as it was, under other circumstances, to receive it. Multiply such an instance by the thousand details of daily intercourse, and one has a picture of the most permanent and enduring method of giving direction to the activities of the young.