Not effort but zestless endeavor is the tragedy of life. Interest and play are one and inseparable as body and soul. Duty itself is not adequately conceived and felt if it is not pleasure, and is generally too feeble and fitful in the young to awaken much energy or duration of action. Play is from within from congenital hereditary impulsion. It is the best of all methods of organizing instincts. Its cathartic or purgative function regulates irritability, which may otherwise be drained or vented in wrong directions, exactly as Breuer[24] shows psychic traumata may, if overtense, result in "hysterical convulsions." It is also the best form of self-expression; and its advantage is variability, following the impulsion of the idle, perhaps hyperemic, and overnourished centers most ready to act. It involves play illusion and is the great agent of unity and totalization of body and soul, while its social function develops solidarity and unison of action between individuals. The dances, feasts, and games of primitive people, wherein they rehearse hunting and war and act and dance out their legends, bring individuals and tribes together.[25] Work is menial, cheerless, grinding, regular, and requires more precision and accuracy and, because attended with less ease and pleasure and economy of movement, is more liable to produce erratic habits. Antagonistic as the forms often are, it may be that, as Carr says, we may sometimes so suffuse work with the play spirit, and _vice versa_, that the present distinction between work and play will vanish, the transition will be less tragic and the activities of youth will be slowly systematised into a whole that better fits his nature and needs; or, if not this, we may at least find the true proportion and system between drudgery and recreation.