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 causes making for its smooth and effectual operation. Government must keep the ring, and leave it for individuals to play out the game. The theory of the natural rights of the individual is thus supplemented by a theory of the mutual harmony of individual and social needs, and, so completed, forms a conception of human society which is primâ facie workable, which, in fact, contains important elements of truth, and which was responsive to the needs of a great class, and to many of the requirements of society as a whole, during a considerable period.

On both sides, however, the theory exhibits, under criticism, fundamental weaknesses which have both a historical and a speculative significance. Let us first consider the conception of natural rights. What were these rights, and on what did they rest? On the first point men sought to be explicit. By way of illustration we cannot do better than quote the leading clauses of the Declaration of 1789.