If I am not deceived, my readers must be convinced at least of one thing, that Social Truth is not to be looked for either in Utopia or in the Old Routine; that Political Economy is not the Science of Society, and yet that it contains the elements of such a science, even as chaos before creation contained the elements of the universe; and finally, that in order to arrive at the definitive organization which would appear to be the destiny of our race upon this globe, it is only necessary to make a general equation of all our contradictions. But what shall be the formula of this equation? Already we have been enabled to perceive, that it must be a Law of Exchange, a theory of Mutualism, a system of Guarantees, which dissolves the old forms of... (From : proudhonlibrary.org.)