Mens ideas are the most direct emanations of their material state. – Karl Marx
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
The ruling ideas of each age have ever been the ideas of its ruling class. – Karl Marx
It is not history which uses men as a means of achieving – as if it were an individual person – its own ends. History is nothing but the activity of men in pursuit of their ends. – Karl Marx