Re: Newton's religious side.
Newton's belief in God is justified because his discoveries/laws in classical mechanics have magical constants, and absolute and complete accuracies, making the universe a precise clockwork model of some higher being.
We now "know" that his laws and theories aren't true, but are good enough approximations of the chaotic truth which hold good in most scenarios the avg. human would be faced with. i doubt Newton would believe in even one God if he were alive today.