This is an extraordinarily inspiring speech. It is quite sad to note that the speech is apparently blocked in China. Just being able to watch this video without worrying about the potential consequences of watching it is a precious gift that we should be grateful of.
http://vimeo.com/moogaloop.swf?clip_id=1711302&server=vimeo.com&show_title=1&show_byline=1&show_portrait=0&color=&fullscreen=1
J.K. Rowling Speaks at Harvard Commencement from Harvard Magazine on Vimeo.