in it. it is a basic human desire and it also puts our worries in perspective. >> larry: you say science can explain the universe without the need for a creator. what is that explanation? why is there something instead of nothing? >> gravity and quantum theory cause universes to be created spontaneously out of nothing. >> larry: you write that because in is a law such as gravity, the universe can and will create itself from nothing. will you tell me how that law came into existence? >> gravity is a consequence of "m" theory which is the only possible unified theory. it's like saying why is two plus two four?