William Lyon Mackenzie King served all of Canada as prime minister. He was Canada’s longest serving prime minister and for all other Commonwealth countries too. His successive governments created the Canadian Welfare State and the place we once held in the world. King strove for the social cushion of a united, autonomous, and prosperous country. A lifetime later all Canadians still benefit from his initiative and skill. King’s life followed the social gospel in the political world and in the pioneering study of industrial relations. His work, relatives, and friends; successes and disappointments, are presented as you have never encountered them before.