"Humans have an innate drive to do things for their own sake because they matter. This is one of the most robust scientific findings of the twenty-first century, but it has largely gone ignored." - Quicklet on Daniel H. Pink's Drive: The Surprising Truth About What Motivates Us by Paula Braun.
http://www.kobobooks.com/ebook/Quicklet-Daniel-Pinks-Drive-The/book-iFFNqXqAF0qnFgp1GmKMyQ/page1.html