One or two further examples will serve as illustrations. According to occult science a so-called nervous excitable child should be treated differently from a lethargic and inactive one, with regard to its surroundings. Everything must be taken into consideration, from the color of the room and the various objects by which the child is generally surrounded, to the color of the clothes in which it is dressed. One may often do the wrong thing, unless willing to be guided by occult science, for a materialistic tendency will in many cases hit on just the opposite of what is right. An excitable child should be clothed and surrounded with red or reddish-yellow colors, whilst for the opposite type of child, blue or bluish-green should be selected. For, in accordance with the color used outwardly is the complementary color produced inwardly. Thus, for instance, green is produced by red; orange-yellow by blue, and of this one may easily be convinced by looking for a time on a spot of a particular color and then quickly directing the eyes to a white surface. This complementary color is produced by the physical organs of the child, and in turn reacts upon the corresponding organic structures necessary to the child. Red in the environment of an excitable child produces inwardly the green complementary picture. The activity thus produced by the sensation of green has a calming effect and the organs take upon themselves the tendency to composure. One rule must invariably be taken into consideration at this period of life—that the physical body has to create for itself the standard of what is suitable to it. It does this through the corresponding development of desire. Generally speaking it may be said that the healthy physical body desires only what is good for it. And as long as it is a question only of the physical body of the growing child, one ought to notice carefully what it is that is sought by the healthy desires, cravings and pleasures. Joy and pleasure are the powers which draw out the physical forms of the organs, in the best way. A very great error may be committed in this direction by not placing the child in the suitable physical conditions with regard to its environment. This can especially be the case with regard to the instinct of nourishment. The child can be overfed with things that make him completely lose healthy instincts of nourishment, whilst through correct feeding they can be preserved for him so fully, that he will ask (even to a glass of water) for that which under given circumstances is good for him, and will refuse anything that may be harmful. When occult science is called upon to construct a system of education, it will be able to specify, even to the particular articles of nourishment and table luxuries, all that has here to be considered. For it is a practical teaching, applicable to life, and no mere colorless theory—as indeed one might suppose, from the mistakes of many Theosophists of today.