Unerringly, these facts point to a union of social forces--the children's library and the children's playground, a realization of that clear comprehension which the ancient Greeks had of the unity between the body and the mind. Quoting Plato: "If children are trained to submit to laws in their plays' the love of law enters their souls with the music accompanying their games, never leaves them, and helps them in their development." Having in thought physical recreation as a stimulus to mental development, in combination bringing home the joyousness of life, an ideal union of forces is being effected in some of the larger cities. In some places, the movement has assumed but an initial stage--a bit of tent shelter for distribution of books to children gathered at the sand pile. In some instances co- operation has joined the work of park breathing centers and library organizations. This has reached completed form in the placement of branch libraries as part of the park equipment, either quarters within a general building, or a separate little building adjacent to or on the athletic field. But whether in place of high or low degree; whether in rented store or memorial building of monumental type; whether in the rooms of a school building or a corner in a factory; whether by this method or by that, the children's librarian employs the printed page to serve as instrument to these ends: The building of character, making for the best in citizenship. The enlargement of narrow lives, bringing the joy and savour and beauty of life to the individual. The opening of opportunity to all alike, which is the essence of democracy. And in, the doing, an incidental and a great contribution is made to society as a whole. For, as the story hour unfolds a new world to the listener whose life has been bounded by a litter- covered alley and three bare walls, or whose look into the outside world has been perhaps a roof of tar and gravel and a yawning chasm beyond, so the development of the imagination through the right sort of books shall make possible the fullest development of the individual boy and girl. In many a life there has been a supreme moment when some circumstance, some stimulus has changed that life for good or ill. For want of that stimulus, the dormant power of many a man has gone to waste. Half the derelicts of humanity who are but outcasts of the night had in them the making of good men--perhaps some of them of great men, in science or in art. There is no waste that is greater than lost opportunity; there is no loss so great as undiscovered resource. Speaking of imagination in work, Mr. Hamilton Wright Mabie points out that: