“Ideology” and “false consciousness”

The sociology of knowledge in­herited from Marx not only the sharpest formulation of its central problem (that is “man´s consciousness is determined by his social being”) but also some of its key concepts, among which should be mentioned particularly the concepts of ‘ideology’ (ideas serving as weapons for social interests) and ‘false consciousness’ (thought that is alienated from the real social being of the thinker).