Sanity is a difficult prospect. Maintaining it would be enough to drive one mad.
Madness string 18342
What is it for? Why, it could be for anything. Maybe it's just to look at, or to brighten a room, or to hold things in place. Maybe it sits on the lawn, taking up space over there in the corner, and people ask, 'why, what is this? Whatever purpose could it possible serve?' And that is its purpose. That is what it is for.