Well, let us consider a favorite topic of Christian thinkers: the topic of eternity. This concept, historically speaking, was one great new idea brought by Christianity to the world. We are pretty sure that eternity exists -- that the word "eternity" refers to something actual, in contrast, say, to the word "angels." Eternity is simply a state in which you are free from and somehow out of and above time. There is no past, present, and future; there is just pure ontological being. "Eternity" is not a word denoting merely a very long time; it is essentially timeless. Well, let me ask this: Are there any changes that take place there; i.e., take place outside of time? Because if you say, "Yes, eternity is not static; things happen," then I at once smile knowingly and point out that you have introduced time once more. The concept "time" simply denotes -- or rather posits -- a condition or state or stream -- whatever -- in which change occurs. No time, no change. Eternity is static. But if it is static, it is even less than long-enduring; it is more like a geometric point, an infinitude of which can be determined along any given line. Viewing my theory about orthogonal or lateral change, I defend myself by saying, "At least it is intellectually less nonsensical than the concept of eternity." And everyone talks about eternity, whether they intend to do anything about it or not.
Let me present you with a metaphor. Let us say that there exists this very rich patron of the arts. Every day on the wall of his living room above his fireplace his servants hang a new picture -- each day a different masterpiece, day after day, month after month -- each day the "used" one is removed and replaced by a different and new one. I will call this process change along the linear axis. But now let us suppose the servants temporarily running out of new, replacement pictures. What shall they do in the meantime? They can't just leave the present one hanging; their employer has decreed that perpetual replacement -- i.e. changing the pictures -- is to take place. So they neither allow the current one to remain nor do they replace it with a new one; instead, they do a very clever thing. When their employer is not looking, the servants cunningly alter the picture already on the wall. They paint out a tree here; they paint in a little girl there; they add this; they obliterate that; they make the same painting different and in a sense new, but as I'm sure you can see, not new in the sense of replacing it. The employer enters his living room after dinner, seats himself facing his fireplace, and contemplates what should be -- according to his expectations -- a new picture. What does he see? It certainly isn't what he saw previously. But also it isn't somehow... and here we must become very sympathetic with this perhaps somewhat stupid man, because we can virtually see his brain circuits striving to understand. His brain circuits are saying, "Yes, it is a new picture, it is not the same one as yesterday, but also it is the same one, I think, I feel on a very deep, intuitive basis... I feel that somehow I've seen it before. I seem to remember a tree, though, and there is no tree." Now, perhaps, if we extrapolate from this man's perceptual, mentational confusion to the theoretical point I was making about lateral change, you can get a better idea of what I mean; I mean, perhaps you can, to at least a degree, see that although what I'm talking about may not exist -- my concept may be fictional -- it could exist. It is not intellectually self-contradictory.
As a science fiction writer I gravitate toward such ideas as this; we in the field, of course, know this idea as the "alternate universe" theme. Some of you, I am sure, know that my novel The Man in the High Castle utilized this theme. There was in it an alternate world in which Germany and Japan and Italy won World War II. At one point in the novel Mr. Tagomi, the protagonist, somehow is carried over to our world, in which the Axis powers lost. He remained in our world only a short time, and scuttled in fright back to his own universe as soon as he glimpsed or understood what had happened -- and thought no more of it after that; it had been for him a thoroughly unpleasant experience, since, being Japanese, it was for him a worse universe than his customary one. For a Jew, however, it would have been infinitely better -- for obvious reasons.
In The Man in the High Castle I give no real explanation as to why or how Mr. Tagomi slid across into our universe; he simply sat in the park and scrutinized a piece of modern abstract handmade jewelry -- sat and studied it on and on -- and when he looked up, he was in another universe. I didn't explain how or why this happened because I don't know, and I would defy anyone, writer, reader, or critic, to give a so-called "explanation." There cannot be one because, of course, as we all know, such a concept is merely a fictional premise; none of us, in our right minds, entertains for even an instant the notion that such alternate universes exist in any actual sense. But let us say, just for fun, that they do. Then, if they do, how are they linked to each other, if in fact they are (or would be) linked? If you drew a map of them, showing their locations, what would the map look like? For instance (and I think this is a very important question), are they absolutely separate one from another, or do they overlap? Because if they overlap, then such problems as "Where do they exist?" and "How do you get from one to the next?" admit to a possible solution. I am saying, simply, if they do indeed exist, and if they do indeed overlap, then we may in some literal, very real sense inhabit several of them to various degrees at any given time. And although we all see one another as living humans walking about and talking and acting, some of us may inhabit relatively greater amounts of, say, Universe One than the other people do; and some of us may inhabit relatively greater amounts of Universe Two, Track Two, instead, and so on. It may not merely be that our subjective impressions of the world differ, but there may be an overlapping, a superimposition, of a number of worlds so that objectively, not subjectively, our worlds may differ. Our perceptions differ as a result of this. And I want to add this statement at this point, which I find to be a fascinating concept: It may be that some of these superimposed worlds are passing out of existence, along the lateral time line I spoke of, and some are in the process of moving toward greater, rather than lesser, actualization. These processes would occur simultaneously and not at all in linear time. The kind of process we are talking about here is a transformation, a kind of metamorphosis, invisibly achieved. But very real. And very important.
Contemplating this possibility of a lateral arrangement of worlds, a plurality of overlapping Earths along whose linking axis a person can somehow move -- can travel in a mysterious way from worst to fair to good to excellent -- contemplating this in theological terms, perhaps we could say that herewith we suddenly decipher the elliptical utterances that Christ expressed regarding the Kingdom of God, specifically where it is located. He seems to have given contradictory and puzzling answers. But suppose, just suppose for an instant, that the cause of the perplexity lay not in any desire on his part to baffle or to hide, but in the inadequacy of the question. "My Kingdom is not of this world," he is reported to have said. "The Kingdom is within you." Or possibly, "It is among you." I put before you now the notion, which I personally find exciting, that he may have had in mind that which I speak of as the lateral axis of overlapping realms that contain among them a spectrum of aspects ranging from the unspeakably malignant to the beautiful. And Christ was saying over and over again that there really are many objective realms, somehow related, and somehow bridgeable by living -- not dead -- men, and that the most wondrous of these worlds was a just kingdom in which either He Himself or God Himself or both of them ruled. And he did not merely speak of a variety of ways of subjectively viewing one world; the Kingdom was and is an actual different place, at the opposite end of continua starting with slavery and utter pain. It was his mission to teach his disciples the secret of crossing along this orthogonal path. He did not merely report what lay there; He taught the method of getting there. But, tragically, the secret was lost. The enemy, the Roman authority, crushed it. And so we do not have it. But perhaps we can refind it, since we know that such a secret exists.