Bruce Charlton has noticed an essay by Mormon author Orson Scott Card, in which Card has a “Traditional Christian” and an LDS believer arguing over the nature of the Trinity. The Christian says the Trinity is like three parallel lines that everywhere touch each other, while the LDS says that it is like three disparate parallel lines.
Both these geometrical analogies are of course radically defective. That of the “Traditional Christian” fails to express threeness, while that of the LDS fails to express oneness. They illustrate the difficulty of trying to explain the being who is the very basis of explanation as such. If God is the origin of all that is, then he can’t be explained in terms of anything else. We should hardly be surprised that he can’t be accommodated by the abstractions of Euclidean geometry (especially since it is inadequate even as a formalization of our universe). If you’ve got an explanation of God, then what you’ve explained ain’t God. Nor would a God that you could fully understand be quite satisfactory to the religious impulse, for such a God would be in at least one way smaller than our own minds, and thus scandalous to worship.