James Hinton, himself a well-known physician of his time, attempted to solve the mystery of pain by showing that it is the accompaniment of imperfection. That what is now experienced as pain might be exquisite pleasure given a higher stage of human development. But this, after all, only shifts the mystery one step farther. Instead of the mystery of pain we have the mystery of imperfection. Yet to image perfection is always to image something incapable of growth or further development. Take, for example, a perfect circle. So long as it remains unbroken, flawless, the line (or infinite number of lines) composing it cannot be continued or extended. But given a break in the line and it may be continued round and round, up and up (or down and down) into an infinitely ascending spiral. This possibility of extension depends on a break, on an imperfection. It does not follow, of course, that every flaw in human nature is always the starting-point of new growth, every failure a stepping-stone to greater knowledge, but the possibility is there. It is for men to see that they do not neglect their opportunities.--[EDS.] IMAGINATION IN PLAY. _Regular readers will recognise in this wonderfully simple and suggestive article a continuation of the series previously entitled "Healthy Brains." The author of "The Children All Day Long" is an intimate disciple of one of the greatest living psychologists, and she has a message of the first importance to all who realise that true health depends as much on poise of mind as on physical fitness._--[EDS.] The fruit of imagination ripens into deeds actually done in the service of man: its flower brightens the whole of life and makes it fragrant, from the budding-time of children's play and laughter to the developed blossoms of the creative imagination which we call painting or poetry or music. Play and art have this in common, that they are activities pursued for the sake of the activity itself, not as a means to any other object, not aiming at any material usefulness. Actually, of course, there is nothing more useful, on every scale of usefulness, than the development of the individual in art or play, but these would never be really themselves while an ulterior purpose formed a background to them in consciousness. Physical exercises devised for the sake of health are a more or less pleasant form of work; they do not take the place of play. Our ordinary work is usually more or less one-sided and unbalanced in the demands it makes upon us; we therefore try to find what other set of movements will undo this unbalancement and give us back unbiased bodies. When that is done, and not till then, we get freedom, and it is at that moment that real "play" begins--the use of the freed muscles according to our own will and pleasure.