That is why we voluntarily accept the epithet of scientific, provided we do not thus confuse ourselves with the positivists, sometimes embarrassing guests, who assume to themselves a monopoly of science; we do not seek to maintain an abstract and generic thesis like lawyers or sophists, and we do not plume ourselves on demonstrating the reasonableness of our aims. Our intentions are nothing less than the theoretical expression and the practical explanation of the data offered us by the interpretation of the process which is being accomplished among us and about us and which has its whole existence in the objective relations of social life of which we are the subject and the object, the cause and the effect. Our aims are rational, not because they are founded on arguments drawn from the reasoning of reason, but because they are derived from the objective study of things, that is to say, from the explanation of their process, which is not, and which cannot be, a result of our will but which on the contrary triumphs over our will and subdues it. Not one of the previous or subsequent works of the authors of the Manifesto themselves, although they have a much more considerable scientific leaning, can replace the Manifesto or have the same specific efficacy. It gives us in its classic simplicity the true expression of this situation; the modern proletariat exists, takes its stand, grows and develops in contemporary history as the concrete subject, the positive force whose necessarily revolutionary action must find in communism its necessary outcome. And that is why this work while giving a theoretical base to its prediction and expressing it in brief, rapid and concise formulae, forms a storehouse, or rather an inexhaustible mine of embryonic thoughts which the reader may fertilize and multiply indefinitely; it preserves all the original and originating force of the thing which is but lately born and which has not yet left the field of its production. This observation is intended especially for those who applying a learned ignorance, when they are not humbugs, charlatans, or amiable dilettanti, give to the doctrine of critical communism precursors, patrons, allies and masters of every class without any respect for common sense and the most vulgar chronology. Or again, they try to bring back our materialistic conception of history into the theory of universal evolution which to the minds of many is but a new metaphor of a new metaphysics. Or again they seek in this doctrine a derivative of Darwinism which is an analogous theory only in a certain point of view and in a very broad sense; or again they have the condescension to favor us with the alliance or the patronage of that positive philosophy which extends from Comte, that degenerate and reactionary disciple of the genial Saint-Simon, to Spencer, that quintessence of anarchical capitalism, which is to say that they wish to give us for allies our most open adversaries.