I have written extensively about the “two-storey universe.” In short, this is a description of how many modern Christians see the world. There is the first floor – the natural world which operates according to naturalist, “secular” rules, and the second floor – the world of God, heaven, hell, angels, etc. The spiritual crisis of modern man is the inherent disconnect in these two worlds. It is a belief construct whose history goes back some centuries yielding a deformed Christianity and a rising tide of unbelief. As I have written elsewhere, many Christians have serious doubts about whether there actually is second floor.
One interesting component of this world-view is unbelief. When a Christian whose world-view is dominated by the two-storey universe ceases to believe – what he ceases to believe in is the second storey. There need be little change, if any, to the first-floor on which he perceives himself to live. He does not cease to believe in the God who is here, but in a God who is “out there.”
Of course, what remains in such a situation of unbelief, is an acceptance of a universe that is less than a full account of how things truly are. The first floor of a two-storey universe is not the same thing as the “one-storey universe” I have described: it is simply a house with the second floor blown off. It is in this sense that I have commented on Christian fundamentalism (one of the primary proponents of the two-storey universe) and contemporary atheism as two-sides of the same coin. Their interminable arguments are a conversation that takes place in half a universe. One argues that there is a second floor while the other argues that the truncated, detached debacle of a first floor is all there is. However, they do not disagree about the fundamentals of the first floor. The daily world (and often the daily life) of a two-storey Christian can be as empty and secular as his atheist counterpart. He differs only in his anxiety to prove the existence of a second floor.
I believe it is important to go to the heart of these matters – to realize that when arguments take place between such inhabitants of the two-storey world – nothing authentic is taking place. Both positions are inheritors of a broken view of the world and neither will ever state the truth in a satisfactory manner.
It is interesting to me that there are atheists who do not belong to this category of “two-storey unbelievers.” Their lack of belief in “God” includes deep questions about the very character of the universe and the nature of human existence. As such, they share much in common with the Tradition of the Orthodox faith. Many converts to Orthodoxy must undergo something of an “atheist” stage in order to leave the mythology of the two-storey world and enter into the revelation of God as Christ has given to the Church. It is for this reason that in the service for the reception of converts there is included a formal renunciation of various errors. You cannot follow the “only truly existing God” while at the same time believing in a God who does not exist. We are to believe in but one God.