If we do discover a complete theory of the universe, that in time should
be understood 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 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