Present-day society is wholly based on the exploitation of the vast masses of the working class by a tiny minority of the population, the class of the landowners and that of the capitalists. It is a slave society, since the “free” workers, who all their life work for the capitalists, are “entitled” only to such means of subsistence as are essential for the maintenance of slaves who produce profit, for the safeguarding and perpetuation of capitalist slavery.
Religion is one of the forms of spiritual oppression which everywhere weighs down heavily upon the masses of the people, over burdened by their perpetual work for others, by want and isolation. Impotence of the exploited classes in their struggle against the exploiters just as inevitably gives rise to the belief in a better life after death as impotence of the savage in his battle with nature gives rise to belief in gods, devils, miracles, and the like. Those who toil and live in want all their lives are taught by religion to be submissive and patient while here on earth, and to take comfort in the hope of a heavenly reward. But those who live by the labour of others are taught by religion to practise charity while on earth, thus offering them a very cheap way of justifying their entire existence as exploiters and selling them at a moderate price tickets to well-being in heaven. Religion is opium for the people. Religion is a sort of spiritual booze, in which the slaves of capital drown their human image, their demand for a life more or less worthy of man.
But a slave who has become conscious of his slavery and has risen to struggle for his emancipation has already half ceased to be a slave. The modern class-conscious worker, reared by large-scale factory industry and enlightened by urban life, contemptuously casts aside religious prejudices, leaves heaven to the priests and bourgeois bigots, and tries to win a better life for himself here on earth. The proletariat of today takes the side of socialism, which enlists science in the battle against the fog of religion, and frees the workers from their belief in life after death by welding them together to fight in the present for a better life on earth.
So far as the party of the socialist proletariat is concerned, religion is not a private affair. Our Party is an association of class-conscious, advanced fighters for the emancipation of the working class. Such an association cannot and must not be indifferent to lack of class-consciousness, ignorance or obscurantism in the shape of religious beliefs. We demand complete disestablishment of the Church so as to be able to combat the religious fog with purely ideo logical and solely ideological weapons, by means of our press and by word of mouth. But we founded our association, the Russian Social-Democratic Labour Party, precisely for such a struggle against every religious bamboozling of the workers. And to us the ideological struggle is not a private affair, but the affair of the whole Party, of the whole proletariat.
Our Programme is based entirely on the scientific, and moreover the materialist, world-outlook. An explanation of our Programme, therefore, necessarily includes an explanation of the true historical and economic roots of the religious fog. Our propaganda necessarily includes the propaganda of atheism; the publication of the appropriate scientific literature, which the autocratic feudal government has hitherto strictly forbidden and persecuted, must now form one of the fields of our Party work. We shall now probably have to follow the advice Engels once gave to the German Socialists: to translate and widely disseminate the literature of the eighteenth-century French Enlighteners and atheists.
Lenin