"To say that God made the universe gives us no explanation of the beginnings of things. If we are told that God made the universe, the question immediately arises: Who made God? Did he always exist, or was there some power back of that? Did he create matter out of nothing, or is his existence coextensive with matter? The problem is still there. What is the origin of it all? If, on the other hand, one says that the universe was not made by God, that it always existed, he has the same difficulty to confront. To say that the universe was here last year, or millions of years ago, does not explain its origin. This is still a mystery. As to the question of the origin of things, man can only wonder and doubt and guess."