If emotion or thought could exist in a form or object, I believe it would be a bubble. We would all walk around followed by a floating bubble that would continuously pop when a new thought replaced it. I think this helps explain the problem of introspective thinking. For when we would turn to look at the thought or emotion felt (the bubble behind us)...it would burst and leave nothing but a shimmery trace. For things just are, and we do not have the capacity to comprehend everything, no matter how wise or intelligent people may seem to think they are.