Basically Glass just sat at a table and spoke for a couple hours on whatever crossed his mind. One of my favorite things that he said was this:
Drawing is about seeing, dance is about moving, music is about listening. Poetry, by the way, is about speaking.
You could say it's overly reductive and essentialist, but I think there's something elegant about that statement.
(Yes, I also think there's something pretentious about THAT statement, but whatever.)