When doing my post a while back called 'God is Superfluous' I was searching around for this quote, and google wasn't helping me much because I had the wording wrong. Alas, I have found the quote that I was searching for. The quote comes from French Mathematician Pierre-Simon Laplace (1749-1827). Laplace was giving a copy of his work Mécanique Céleste (Celestial Mechanics) to Napoleon, who had been informed that it made no mention of god, and Napoleon asked Laplace "they tell me you have written this large book on the system of the universe, and have never even mentioned its Creator." and Laplace responded "I had no need of that hypothesis."
So it is with all of our natural models, they do not contain god in them, because they work perfectly well without the assumption of god.