A congenial family life is the immemorial type of moral unity, and source of many of the terms—such as brotherhood, kindness, and the like—which describe it. The members become merged by intimate association into a whole wherein each age and sex participates in its own way. Each lives in imaginative contact with the minds of the others, and finds in them the dwelling-place of his social self, of his affections, ambitions, resentments, and standards of right and wrong. Without uniformity, there is yet unity, a free, pleasant, wholesome, fruitful, common life. As to the playground, Mr. Joseph Lee, in an excellent paper on Play as a School of the Citizen, gives the following account of the merging of the one in the whole that may be learned from sport. The boy, he says, “is deeply participating in a common purpose. The team and the plays that it executes are present in a very vivid manner to his consciousness. His conscious individuality is more thoroughly lost in the sense of membership than perhaps it ever becomes in any other way. So that the sheer experience of citizenship in its simplest and essential form—of the sharing in a public consciousness, of having the social organization present as a controlling ideal in your heart—is very intense.... Along with the sense of the team as a mechanical instrument, and unseparated from it in the boy’s mind, is the consciousness of it as the embodiment of a common purpose. There is in team play a very intimate experience of the ways in which such a purpose is built up and made effective. You feel, though without analysis, the subtle ways in which a single strong character breaks out the road ahead and gives confidence to the rest to follow; how the creative power of one ardent imagination, bravely sustained, makes possible the putting through of the play as he conceives it. You feel to the marrow of your bones how each loyal member contributes to the salvation of all the others by holding the conception of the whole play so firmly in his mind as to enable them to hold it, and to participate in his single-minded determination to see it carried out. You have intimate experience of the ways in which individual members contribute to the team and of how the team, in turn, builds up their spiritual nature.... And the team is not only an extension of the player’s consciousness; it is a part of his personality. His participation has deepened from coöperation to membership. Not only is he now a part of the team, but the team is a part of him.”[13] Moral unity, as this illustration implies, admits and rewards strenuous ambition; but this ambition must either be for the success of the group, or at least not inconsistent with that. The fullest self-realization will belong to the one who embraces in a passionate self-feeling the aims of the fellowship, and spends his life in fighting for their attainment.