"An initial cosmological singularity . . . forms a past temporal extremity to the universe. We cannot continue physical reasoning, or even the concept of spacetime, through such an extremity. . . . On this view the big bang represents the creation event; the creation not only of all the matter and energy in the universe, but also of spacetime itself." -- Paul Davies, quoted by William Lane Craig, here.
Lots of good stuff on P.C.W. (Paul) Davies, at Wiki.