It was written by a great photographer who is now, also, a great teacher. It's about developing as a photographer. Big thanks to VSL reader, Stan, who brought this to my attention.
On another note, I love Robin's post today because the photos are great and the idea's he espouses match mine. It's a good read: http://robinwong.blogspot.com/2012/04/dont-you-ever-get-bored.html