Critical communism has never refused, and it does not refuse, to welcome the multiple and valuable suggestions, ideological, ethical, psychologic and pedagogic which may come from the knowledge and from the study of all forms of communism from Phales of Chalcedon down to Cabet.[20] More than this, it is by the study and the knowledge of these forms that the consciousness of the separateness of scientific socialism from all the rest becomes developed and fixed. And in making this study who is there who will refuse to recognize that Thomas More was a heroic soul and a great writer on socialism? Who will not find in his heart a large tribute of admiration for Robert Owen who first gave to the ethics of communism this indisputable principle, that the character and the morals of men are the necessary result of the conditions in which they live and of the circumstances which surround them? And the partisans of critical communism believe it is their duty, traversing history in thought, to claim fellowship with all the oppressed, whatever may have been their destiny, which was that of remaining oppressed and of opening the way after an ephemeral success for the rule of new oppressors. But the partisans of critical communism differentiate themselves clearly on one point from all other forms or manners of communism, or of socialism, ancient, modern or contemporaneous, and this point is of capital importance. They cannot admit that the ideologies of the past have remained without effect and that the past attempts of the proletariat have been always overcome by pure chance, by pure accident, by the effect of a caprice of circumstances. All these ideologies although they reflected in fact the sentiment directly due to social antitheses, that is to say, the real class struggles, with a lofty sense of justice and a profound devotion to an ideal, nevertheless all reveal ignorance of the true causes and of the effective nature of the antitheses against which they hurled themselves by an act of revolt spontaneous and often heroic. Thence their utopian character. We can moreover explain why the oppressive conditions of other epochs although they were more barbarous and cruel did not bring that accumulation of energy, that concentration of force, or that continuity of resistance which is seen to be realizing itself and developing in the proletariat of our time. It is the change of society in its economic structure; it is the formation of the proletariat in the bosom of the great industry and of the modern state. It is the appearance of the proletariat upon the political scene,--it is the new things, in fine, which have engendered the need of new ideas. Thus critical communism is neither moralizer, nor preacher, nor herald, nor utopian--it already holds the thing itself in its hands and into the thing itself it has put its ethics and its idealism.