In my view to assert that God exists is to claim the right and need to carry on an activity, to be engaged in research, and I think this throws light on what we are doing if we try to prove the existence of God. To prove the existence of God is to prove that some questions still need asking, that the world poses these questions for us.

To prove the existence of God, then, would be rather like proving the validity of science — I don’t mean science as a body of established facts set out in textbooks or journals, but science as an intellectual activity, the activity of research currently going on; and not just routine research which consists in looking for the answers to clearly formulated questions by means of clearly established techniques, but the research which is the growing point of science, the venture into the unknown.

It is perfectly possible to deny the validity of this. It is perfectly possible to say we now have science; (we didn’t have it in the eighth century, let us say, but we have it now). It is just there; from now on it is all really just a matter of tidying up a few details. Now of course all the really great advances in science have come by questioning just that; by questioning, let us say, whether the Newtonian world is really the last word, by digging down and asking questions of what everybody has come to take for granted. But you could imagine quite easily a society which discouraged such radical questioning.