“El silencio es tambien musica.”

World Trade Center Transportation Hub, concourse, by Santiago Calatrava, image: PANYNJ powerpoint

That could be a reference to John Cage, but it’s actually Santiago Calatrava discussing his design for a transportation hub at the WTC site. The dual-winged design will be unveiled today.
For images and details, see the Port Authority press release and Calatrava’s PowerPoint presentation, David Dunlap’s reporting or Muschamp’s free verse reaction in The Times, and a pile of images from Yahoo News.