Scientific societies and congresses, international lifeboat and Red Cross associations, laborers' unions, peace societies, volunteers who hasten to the rescue at times of great public calamity, are all examples, among thousands, of that power of the spirit of association which always shows itself when a need arises or an enthusiasm takes hold, and the means do not fail. That voluntary associations do not cover the world and do not embrace every branch of material and moral activity is the fault of the obstacles placed in their way by governments, of the antagonisms create by the possession of private property, and of the impotence and degradation to which the monopolizing of wealth on the part of the few reduces the majority of mankind.