When we combine quantum mechanics with general
relativity, there seems to be a new possibility that
did not arise before: that space and time together
might form a finite, four-dimensional space without
singularities or boundaries, like the surface of
the earth but with more dimensions.
It seems that this idea could explain many of the
observed features of the universe, such as its
large-scale uniformity and also the smaller-scale
departures from homogeneity, like galaxies, stars,
and even human beings. It could even account for
the arrow of time that we observe.
But if the universe is completely self-contained,
with no singularities or boundaries, and completely
described by a unified theory, that has profound
implications for the role of God as Creator.
Einstein once asked the question: "How much choice
did God have in constructing the universe?" If the
no boundary proposal is correct, he had no freedom
at all to choose initial conditions. He would, of
course, still have had the freedom to choose the
laws that the universe obeyed.
[..]
However, if we do discover a complete theory, it
should in time be understandable in broad principle
by everyone, not just a few scientists. Then
we shall all, philosophers, scientists, and just
ordinary people, be able to take part in the
discussion of the question of why it is that we
and the universe exist.
If we find the answer to that, it would be the
ultimate triumph of human reason--for then we
would know the mind of God.
Stephen Hawking (1942- )
_A Brief History Of Time_ [1996], "Conclusion"
