Religion is the sigh of the oppressed creature, the heart of a heartless world, and the soul of soulless conditions. It is the opium of the people. – Karl Marx
A commodity appears at first sight an extremely obvious, trivial thing. But its analysis brings out that it is a very strange thing, abounding in metaphysical subtleties and theological niceties. – Karl Marx
Natural science will in time incorporate into itself the science of man, just as the science of man will incorporate into itself natural science: there will be one science. – Karl Marx
In a higher phase of communist society… only then can the narrow horizon of bourgeois right be fully left behind and society inscribe on its banners: from each according to his ability, to each according to his needs. – Karl Marx