Thought creates things by slicing up reality into small bits that it can easily grasp. Thus when you are think-ing you are thing-ing. Thought does not report things, it distorts reality to create things, and as Bergson noted, "In so doing it allows what is the very essence of the real to escape." Thus to the extent we actually imagine a world of discrete and separate things, conceptions have become perceptions, and we have in this manner populated our universe with nothing but ghosts.