2. The Communism of the future society will "not be the Communism of the convent or the barrack, such as was formerly preached, but a free Communism which puts the joint products at the disposal of all while leaving to every one the liberty of using them at home."[579] To get an entirely clear idea of every detail of it, indeed, is not as yet possible; "nevertheless we must come to an agreement about the fundamental features at least."[580] What form will production take? That must first be produced which is requisite "for the satisfaction of man's most urgent wants."[581] For this it suffices "that all adults, with the exception of those women who are occupied with the education of children, engage to do five hours a day, from the age of twenty or twenty-two to the age of forty-five or fifty, of any one (at their option) of the labors that are regarded as necessary."[582] "For instance, a society would enter into the following contract with each of its members: 'We will guarantee to you the enjoyment of our houses, stores of goods, streets, conveyances, schools, museums, etc., on condition that from your twentieth year to your forty-fifth or fiftieth you apply five hours every day to one of the labors necessary to life. Every moment you will have your choice of the groups you will join, or you may found a new one provided that it proposes to do necessary service. For the rest of your time you may associate yourself with whom you like for the purpose of scientific or artistic recreation at your pleasure. We ask of you, therefore, nothing but twelve or fifteen hundred hours' work annually in one of the groups which produce food, clothing, and shelter, or which care for health, transportation, etc.; and in return we insure to you all that these groups produce or have produced'."[583]