Richard Nixon thought that Kant's "'perpetual peace' stuff" was "interesting."http://books.google.com/books?id=bqW7WLucHvsC&pg=PA345&lpg=PA345&dq=Kant%27s+Nixon+in+Winter+perpetual+peace&source=bl&ots=axOIS_pDgk&sig=m9XvWnFX-LIRfhvW8BdBb1wsi_c&hl=en&sa=X&ei=sNwyUavkEejj4AOKmYCYDw&ved=0CDMQ6AEwAA#v=onepage&q=Kant%27s%20Nixon%20in%20Winter%20perpetual%20peace&f=false …
@CoreyRobin See also p. 354: "Marx's ideas were powerful on paper."