You need to read a book on Newton if you don't even know that.
I have. It's not so inaccurate to say that Newton was "searching for God". As a religious man, that's how he would see the goal of his intellectual pursuits. I'm not taking issue with that part.
But the ludicrous part is the implication that if he hadn't been religious, he'd have just spent his life as a fisherman or somethin and there would have been, in your worsd, "no science out of Newton". That's ridiculous. Newton had an incredibly inquisitive mind, always racing ahead of his peers in his obsession to understand how things worked and why, even back home on his parents' farm as a young man. Furthermore, he was surrounded by Hooke, Wallis, Huygens, and a whole raft of other brilliant investigators of the rising fields of science and mathematics, and lived in one of the most intellectually stimulating and challenging times in history, the rise of the Enlightenment.
It's just incredible to try to claim that in this environment, with his mind and inclinations, Newton would not have dove head-first into science even lacking his religious beliefs. He just would have called his quest something other than "searching for God", like "questing for knowledge", or "searching for Truth" or something.
There's nothing about Newton's religious faith specifically that uniquely triggered his life's path. His mind was always racing and investigating, out of an innate driving inquisitiveness and the sheer ability of his mind to race where most others could only slowly stumble.