Where's Joe?

Behind these windows was born someone who thought that imaginary things had been used as excuses to unfairly distribute the resources of the world. So he thought, "hey, if they were imaginary in the first place, then they might be re-imagined to work for us all, right?" Sounds like a simple enough idea, but this guy had a Doctorate in Philosophy from the University of Jena (the best place in the world to study Philosophy at the time.) And you would not believe the number of people who thought this idea was dangerous! Ha!~

For full credit, name the town that this house still stands in. Also, name the person who had this simple idea. Then tell us where he is buried.