"Mechanical inventions, constructed on the principles that baffled my research to ascertain, worked by an agency infinitely more powerful and infinitely more easy of management than aught we have yet extracted from electricity or steam, with the aid of children whose strength was never overtasked, but who loved their employment as sport and pastime, sufficed to create a Public - wealth so devoted to the general use that not a grumbler was ever heard of. (Chapter XXVI)"