To “know” is to contain a true image or idea within a mind. A being that knows everything must also know itself. Therefore, the mind of an omniscient being must contain an image of itself within itself. It would also have to contain an image of the image of itself, and an image of that image, and so on. It would have to know that it contains those images, and also contain an image of itself knowing that it contains not only those images but the image of knowing that it contains the knowledge of such images—well, you see where this is going.
