advancing a theory that would … be a useful tool … [in] effecting a revolutionary upheaval of the capitalist system in favor of socialism." As such, the crux of his arguments was that humans are best guided by reason. Religion, Marx held, was a significant hindrance to reason, inherently masking the truth and misguiding followers. Marx viewed alienation as the heart of social inequality. The antithesis to this alienation is freedom. Thus, to propagate freedom means to present individuals with the truth and give them a choice to accept or deny it. In this, "Marx never suggested that religion ought to be prohibited." Central to Marx's theories was the oppressive economic situation in which he dwelt. With the rise of European industrialism, Marx and his colleague Friedrich Engels witnessed and responded to the growth of what he called "surplus value". Marx's view of capitalism saw rich capitalists getting richer and their workers getting poorer (the gap, the exploitation, was the "surplus value"). Not only were workers getting exploited, but in the process they were being further detached from the products they helped create. By simply selling their work for wages, "workers simultaneously lose connection with the object of labor and become objects themselves. Workers are devalued to the level of a commoditya thing …" From this objectification comes alienation. The common worker is led to believe that he or she is a replaceable tool, and is alienated to the point of extreme discontent. Here, in Marx's eyes, religion enters. Capitalism utilizes our tendency towards religion as a tool or ideological state apparatus to justify this alienation. Christianity teaches that those who gather up riches and power in this life will almost certainly not be rewarded in the next ("it is harder for a rich man to enter the Kingdom of Heaven than it is for a camel to pass through the eye of a needle …") while those who suffer oppression and poverty in this life while cultivating their spiritual wealth will be rewarded in the Kingdom of God. Hence Marx's famous line – "religion is the opium of the people", as it soothes them and dulls their senses to the pain of oppression. Some scholars have recently noted that this is a contradictory (or dialectical) metaphor, referring to religion as both an expression of suffering and a protest against suffering. Émile Durkheim Émile Durkheim placed himself in the positivist