Instead, then, of beginning with a state which would express man's ideal nature, and adapting it as well as may be to man's actual shortcomings from that ideal, we must recognise that the state and all political machinery are as much the expression of man's weakness as of his ideal possibilities. The state is possible only because men have common aspirations, but government, and political power, the existence of officials who are given authority to act in the name of the whole state, are necessary because men's community is imperfect, because man's social nature expresses itself in conflicting ways, in the clash of interests, the rivalry of parties, and the struggle of classes, instead of in the united seeking after a common good.