“Conferences at the top level are always courteous. Name calling is left to the foreign ministers.”
Comment on the 1955 Geneva Summit, quoted in the CQ Weekly Report ( 1 August 1955 http://books.google.com/books?id=GN8tAAAAIAAJ&q=%22Conferences+at+the+top+level+are+always+courteous+Name+calling+is+left+to+the+foreign+ministers%22&pg=PA910#v=onepage)