Although it is the economic forces which fashion men at the pleasure and spur them to action, and although these constitute the mysterious force determining the great currents of history which the Christians attribute to God, and the free-thinking bourgeois assign to Progress, to Civilization, to the Immortal Principles and other similar manitous, worthy of savage tribes, they are nevertheless the product of human activity. Man, who created them and brought them into the world, has thus far let himself be guided by them; yet now that he has understood their nature and grasped their tendency, he can act upon their evolution. The socialists who are accused of being stricken by Oriental fatalism and of relying upon the good pleasure of economic forces to bring to light the communist society instead of crossing their arms like the fakirs of official Economics, and of bending the knee before its fundamental dogma, _laissez faire_, _laissez passer_, propose on the contrary to subdue them, as the blind forces of nature have been subdued, and force them to do good to men instead of leaving them to work misery to the toilers of civilization. They do not wait for their ideal to fall from heaven as the Christians hope for the grace of God, and the capitalists for wealth; they prepare, on the contrary, to realize it, not by appealing to the intelligence of the capitalist class and to its sentiments of justice and humanity, but by fighting it, by expropriating it from its political power, which protects its economic despotism. Socialism, because it possesses a social ideal, has in consequence a criticism of its own. Every class which struggles for its enfranchisement seeks to realize a social ideal, in complete opposition with that of the ruling class. The struggle is waged at first in the ideological world before the physical shock of the revolutionary battle. It thus begins the criticism of the ideas of the society which must be revolted against, for "the ideas of the ruling class are the ideas of society," or these ideas are the intellectual reflection of its material interests. Thus, the wealth of the ruling class is produced by slave labor; religion, ethics, philosophy and literature agree in authorizing slavery. The ugly God of the Jews and Christianity strikes with his curse the progeny of Ham, that it may furnish slaves. Aristotle, the encyclopedic thinker of Greek philosophy, declares that slaves are predestined by nature and that no rights exist for them, for there can be no rights except between equals. Euripides in his tragedies preaches the doctrine of servile morality; St. Paul, St. Augustine and the Church teach slaves submission to their earthly masters that they may deserve the favor of their heavenly master; Christian civilization introduced slavery into America and maintains it there until economic phenomena prove that slave labor is a method of exploitation more costly and less profitable than free labor.