Silence by John Cage is a good book about the subject. http://books.google.com.pr/books/about/Silence.html?id=zKQkLS5zKWAC&redir_esc=y -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mailman-mail5.webfaction.com/pipermail/frameworks/attachments/20130305/d7e507eb/attachment.html>