Theoretical physicist Stephen Hawking says in his new book that he does not believe God exists. He wrote, "Spontaneous creation is the reason there is something rather than nothing, why the universe exists, why we exist. It is not necessary to invoke God to light the blue touch paper and set the Universe going."
In contrast to Hawking’s statement, Aristotle made the point that there had to be some “uncaused cause” in creation. Hawking’s views are also at odds with those of Newton ("The most beautiful system of the sun, planets, and comets, could only proceed from the counsel and dominion on an intelligent and powerful Being") and Einstein (“I believe in Spinoza's God who reveals himself in the orderly harmony of what exists, not in a God who concerns himself with fates and actions of human beings”).
But since we can neither prove nor disprove the existence of God , the opinions of these scientists on the subject are no more valid than yours or mine. Believing that the universe “just happened” takes as much faith as believing in a creator of some sort.
Scientists are beginning to understand how the universe came into existence, but it is the realm of philosophers and theologians to consider why. Just as we should not have preachers telling us what to put in our science textbooks, we should not concern ourselves with Hawking’s theological opinions.