Sorry if this has been posted before - just discovered it myself. http://edu.blogs.com/edublogs/2009/01/john-cleese-on-time-place-and-flow-of-creativity.html
Cleese on Cleese
Thanks for this Michael, I found it v.useful.
I think he's absolutely right about the damage modern stress-filled living can do to creativity. And loved the idea of creating a tortoise enclosure.