It's a lesson in simplicity, persistence and dreams (it ought to be compulsory reading for conservationists!).
I find myself repeating an abridged version quite often when I make the case for predator reintroduction to Scotland (or at least a higher rate of deer culling!).
One interpretation of the term 'conservation', is to keep things the same as they are. This, I would argue, is precisely the last thing that we need to reach the lofty goal of a healthy and sustainable natural world.