I would not claim that Christianity is the source of all science. That is plainly untrue. But the flourishing of science occurred in a predominantly Christian context; it didn't have to wait first for atheism to become dominant. - George: This view of God [as the source of all] is that of the Deists and only came in with the Enlightenment period - Not so. Read the first verses of John's gospel. The "Word" (logos; rational, ordering principle) who is God is the source of all that is not God. - George: It [Deism] is a purification of the concept of God... - I wouldn't call it a 'purification'. It is not a theology many Christians would hold today. It removes God from the world, making the universe a machine running on its own.