It would be impossible to conceive a better scientific justification of the French revolution than Cuvier’s theory presented. For many decades before that event these rising commercialists had groaned under the yoke of feudal dues and feudal restraints of trade. Nothing could be more to their wishes than a sudden social “cataclysm” that would destroy the feudal system with its trade despising and plundering nobility, and exalt its own trading class to fill the vacancy. And when this had been accomplished, and that same nobility had been sent to the guillotine, it was great consolation to have on Cuvier’s authority, that this method of sudden violence had no less a precedent than the methods of the Almighty in suddenly destroying the living things in his own universe. Cuvier’s theory however, almost died with him, for the violent desires of the bourgeoisie were short lived. When it realized the completeness of its own victory, and that the next “cataclysm” would mean its own overthrow and the enthronement of some successor, cataclysms lost favor and were frowned down. Preachers of sudden and violent changes were now regarded as the enemies of society, and Cuvier’s once lauded theory of cataclysms was sneered at as a relic of the dark ages. What the capitalist class wanted now was peace, and long life, and above all, no disturbances. And it was just at this point that Darwin came forward with a theory that seemed made to order. True this theory spoke of evolution and change, but the change was so slow it was impossible to notice it. A million years was as ten minutes to this theory, and if it took as long for one class in society to displace another, or for one social regime to succeed another, as it does for one species to develop from another, the capitalists and their heirs had nothing to apprehend for a thousand generations. There was nothing sudden about this theory, quite the contrary. In fact the real difficulty was to see how anything managed to change at all. As for that part of it which spoke of the survival of the fittest, what could be clearer than that these self-made men were themselves the fittest. It was, of course equally clear that the degraded working class, lacking the cleverness to rise, was destined to be eliminated as unfit, by the laws of nature. For half a century this argument of slow evolution has done valiant service as an antidote for Socialism, and the present ruling class would like to retain it forever. But no ruling class ever was or ever can be wholly omnipotent. The capitalists of to-day can no more hinder the process of social evolution, with its resulting march of ideas, than they can intercept gravitation or divert the tides. They are being driven blindly to their fate by social forces which are beyond their command.