Work and Play Are Complements.—Work cannot take the place of play, neither can play be substituted for work. Nor are the two antagonistic, but each is the complement of the other; for the activities of work grow immediately out of those of play, and each lends zest to the other. Those who have never learned to work and those who have never learned to play are equally lacking in their development. Further, it is not the name or character of an activity which determines whether it is play for the participant, but his attitude toward the activity. If the activity is performed for its own sake and not for some ulterior end, if it grows out of the interest of the child and involves the free and independent use of his powers of body and mind, if it is his, and not someone's else—then the activity possesses the chief characteristics of play. Lacking these, it cannot be play, whatever else it may be.

Play, like other instincts, besides serving the present, looks in two directions, into the past and into the future. From the past come the shadowy interests which, taking form from the touch of our environment, determine the character of the play activities. From the future come the premonitions of the activities that are to be. The boy adjusting himself to the requirements of the game, seeking control over his companions or giving in to them, is practicing in miniature the larger game which he will play in business or profession a little later. The girl in her playhouse, surrounded by a nondescript family of dolls and pets, is unconsciously looking forward to a more perfect life when the responsibilities shall be a little more real. So let us not grudge our children the play day of youth.

5. OTHER USEFUL INSTINCTS

Many other instincts ripen during the stage of youth and play their part in the development of the individual.

Curiosity.—It is inherent in every normal person to want to investigate and know. The child looks out with wonder and fascination on a world he does not understand, and at once begins to ask questions and try experiments. Every new object is approached in a spirit of inquiry. Interest is omnivorous, feeding upon every phase of environment. Nothing is too simple or too complex to demand attention and exploration, so that it vitally touches the child's activities and experience.

The momentum given the individual by curiosity toward learning and mastering his world is incalculable. Imagine the impossible task of teaching children what they had no desire or inclination to know! Think of trying to lead them to investigate matters concerning which they felt only a supreme indifference! Indeed one of the greatest problems of education is to keep curiosity alive and fresh so that its compelling influence may promote effort and action. One of the greatest secrets of eternal youth is also found in retaining the spontaneous curiosity of youth after the youthful years are past.

Manipulation.—This is the rather unsatisfactory name for the universal tendency to handle, do or make something. The young child builds with its blocks, constructs fences and pens and caves and houses, and a score of other objects. The older child, supplied with implements and tools, enters upon more ambitious projects and revels in the joy of creation as he makes boats and boxes, soldiers and swords, kites, play-houses and what-not. Even as adults we are moved by a desire to express ourselves through making or creating that which will represent our ingenuity and skill. The tendency of children to destroy is not from wantonness, but rather from a desire to manipulate.

Education has but recently begun to make serious use of this important impulse. The success of all laboratory methods of teaching, and of such subjects as manual training and domestic science, is abundant proof of the adage that we learn by doing. We would rather construct or manipulate an object than merely learn its verbal description. Our deepest impulses lead to creation rather than simple mental appropriation of facts and descriptions.

The Collecting Instinct.—The words my and mine enter the child's vocabulary at a very early age. The sense of property ownership and the impulse to make collections of various kinds go hand in hand. Probably there are few of us who have not at one time or another made collections of autographs, postage stamps, coins, bugs, or some other thing of as little intrinsic value. And most of us, if we have left youth behind, are busy even now in seeking to collect fortunes, works of art, rare volumes or other objects on which we have set our hearts.

The collecting instinct and the impulse to ownership can be made important agents in the school. The child who, in nature study, geography or agriculture, is making a collection of the leaves, plants, soils, fruits, or insects used in the lessons has an incentive to observation and investigation impossible from book instruction alone. One who, in manual training or domestic science, is allowed to own the article made will give more effort and skill to its construction than if the work be done as a mere school task.