It now seems to me that the findings of more than fifty years of DNA research have provided materials for a new and enormously powerful argument to design.

I now believe that the universe was brought into existence by an infinite Intelligence. I believe that this universe's intricate laws manifest what scientists have called the Mind of God. I believe that life and reproduction originate in a divine Source. Why do I believe this, given that I expounded and defended atheism for more than a half century? The short answer is this: this is the world picture, as I see it, that has emerged from modern science.

I am open to [the notion of theistic revelation], but not enthusiastic about potential revelation from God. On the positive side, for example, I am very much impressed with physicist Gerald Schroeder's comments on Genesis 1. That this biblical account might be scientifically accurate raises the possibility that it is revelation.

My one and only piece of relevant evidence [for an Aristotelian God] is the apparent impossibility of providing a naturalistic theory of the origin from DNA of the first reproducing species ... [In fact] the only reason which I have for beginning to think of believing in a First Cause god is the impossibility of providing a naturalistic account of the origin of the first reproducing organisms.

However far back we may be able to trace the - so to speak - internal history of the Universe, there can be no question of arguing that this or that external origin is either probable or improbable. We do not have, and we necessarily could not have, experience of other Universes to tell us that Universes, or Universes with these particular features, are the work of Gods, or of Gods of this or that particular sort.

Someone tells us that God loves us as a father loves his children. We are reassured. But then something awful happens. Some qualification is made.... We are reassured again. But then perhaps we ask: what is this assurance of God's (appropriately qualified) love worth, what is this apparent guarantee really a guarantee against? Just what would have to happen not merely (morally and wrongly) to tempt but also (logically and rightly) to entitle us to say "God does not love us" or even "God does not exist"?

If it is to be established that there is a God, then we have to have good grounds for believing that this is indeed so. Until and unless some such grounds are produced we have literally no reason at all for believing; and in that situation the only reasonable posture must be that of either the negative atheist or the agnostic. So the onus of proof has to rest on the proposition of theism.