Well, it's an adventure story, and a Bildungsroman, of course, but there was also the intention to describe a culture that had been seen in rather narrow terms.
The key to success is to keep growing in all areas of life - mental, emotional, spiritual, as well as physical.
I have a Ph.D. in cell biology. And that's really manual labor. I mean, experimental science, you do it with your hands. So it's very different. You're out there in a lab, cleaning test tubes, and it just wasn't that fascinating.