EDUCATION forestalling many kinds of trouble by never giving them the opportunity to arise* So far as I am aware, the only system of physical education which fulfils all these conditions is the system developed by F. M. Alexander. Mr. Alexander has given a full account of his system in three books, each of which is prefaced by Professor John Dewey.1 It is therefore unnecessary for me to describe it here—all the more so as no verbal description can do justice to a technique which involves the changing, by a long process of instruction on the part of the teacher and of active co-operation on that of the pupil, of an individual's sensory experiences. One cannot describe the experience of seeing the colour, red. Similarly one cannot describe the much more complex experience of improved physical co-ordination. A verbal description would mean something only to a person who had actually had the experience described; to the mal~ co-ordinated person, the same words would mean some- thing quite different. Inevitably, he would interpret them in terms of his own sensory experiences, which are those of a mal-co-ordinated person. Complete understanding of the system can come only with the practice of it. All I need say in this place is that I am sure, as a matter of personal experience and observation, that it gives us all the things we have been looking for in a system of physical education: relief from strain due to maladjustment, and consequent improvement in physical and mental health; increased consciousness of the physical means employed to gain the ends proposed by the will and, along with this, a general heightening of consciousness on all levels; a technique of inhibition, working on the physical level to prevent the body from slipping back, under the influence of greedy * end-gaining,* into its old habits of mal- 1 Mans Supreme Inheritance, Creative Conscious Control) and The Use of the Self. 223