"Man makes religion, religion does not make man... Man is the world of men, the State and society. This State, this society, produces religion... The struggle against religion is therefore indirectly a struggle against the world whose spiritual aroma is religion."
"Religious suffering is at the same time an expression of real suffering and a protest against real suffering. Religion is the sigh of the oppressed creature, the sentiment of a heartless world, and the soul of soulless conditions. It is the opium of the people." - MARX