I like Jason's book very much, because it is a great support for me, developing my capabilities as a writer (I've written a book about THE PERSEVERANCE OF THE PHILOSOPHERS), as a guitarist (I've been amused, when I read, that Jason actually now is trying to learn violin) and as a photographer (visit my daily BLOG "EXISTENTIALISM at frizztext, flickr community). Fourth his daily lessons are a good training program for foreigners (I'm German) to practice English!