Monday, August 25, 2014

From the Archives: The Paradox of the Stone and the Challenge of Defining "God"

Since I'm talking about the challenge of defining "God" in my philosophy of religion class this week, I thought I'd reprint this post, from an earlier occasion when I covered the same material.

This week in my philosophy of religion class we are talking about the concept of God. Since I have already expressed my views on how "God" should be defined in Is God a Delusion?, I don't intend to simply repeat myself here. But I do want to say a few words about some common challenges to the coherence of the traditional Western theological understanding of God--which, in the language I use in my book, is a "substantive definition" (one that defines God in terms of a set of properties) as opposed to an ostensive definition (which would define God by metaphorically "pointing," as Schleiermacher does when he defines God as the "Whence" of our feeling of absolute dependence) or a formal one (which sets out a procedure for arriving at divine properties, as Anselm does) or a functional one (which is what I tend to favor).

As I worded it in class, the dominant substantive definition of God in Western theology takes God to be "the omnipotent, omniscient, omnibenevolent creator of the world who is transcendent, eternal, and self-existent."

One common challenge to God thus conceived targets the property of omnipotence, arguing that it is incoherent to attribute this property to anything. Another challenges the co-possibility of divine omniscience and creaturely freedom. Of course, the most historically important objection to theism is the argument from evil, which in some of its forms challenges the possibility of there existing a being characterized by omnipotence and omnibenevolence in a world with the amount and kind of evil we find in this one (I won't consider this challenge here, since I will be devoting considerable attention to it later in the semester).

The main thing I want to consider here is what significance such challenges have for the devoted religious believer. For this purpose, let me focus on the challenge to divine omnipotence. In its most common form, this challenge starts with the so-called Paradox of the Stone, which asks, "Can God create a stone so heavy that God cannot lift it?" The argument, roughly, is that however one answers this question one must reject divine omnipotence. Either God can create such a stone, in which case there is something He cannot do, namely lift said stone; or God cannot create such a stone, in which case there is again something God cannot do.

The traditional response to this argument is to define omnipotence in terms of the capacity to do whatever is logically possible--and then to note that it is not logically possible to create a stone so heavy that it cannot be lifted by a being that has the power to lift every possible stone. As such, on the assumption that God is omnipotent, God creating a stone God cannot lift is logically impossible--and since omnipotence is defined as the ability to do whatever is logically possible, the inability for God to create said stone is no restriction on God's omnipotence. It would be like saying that God cannot create a round square or make it true that two plus two equals seventeen.

Of course, if we define omnipotence as the capacity to do even what is logically impossible, then the paradox of the stone is a non-starter. If logical consistency is of no consequence to God, then God could do the logically impossible thing of creating a stone so heavy God could not lift it...and then lifting it (while it remaining true that God could not do so).

But while this solution to the Paradox of the Stone strikes me as sound insofar as it goes, it obscures what I find to be a deeper and more profound question raised by the paradox: Can an omnipotent being limit its power so that it ceases to be omnipotent? And if it can, would a God who did so thereby cease to be God?

How one answers these questions has some very interesting implications. First of all, it has implications for what one thinks about about the idea of "kenosis" that has been proposed (and vigorously debated) by some Christian theologians. "Kenosis" refers to a kind of divine "emptying" that some theologians invoked to help to make sense of the Christian doctrine of incarnation. The question at issue has to do with how Jesus' humanity is to be understood in relation to His divinity. If God is all-knowing, and if Jesus is God, does that mean the baby Jesus was born with a full knowledge of 21st Century string theory and could have explained it at three weeks of age to anyone who might have understood what He was saying?

Some theologians have thought that to answer "yes" to questions of this kind is to strip Jesus of his humanity. To be human involves living a human life--and to be born possessing all the infinite knowledge of the universe pretty much precludes that. Such a being would be a divine being wearing human skin, not a human being at all. But Jesus is supposed to be both fully human and fully God. Is there a way to make sense of this?

Some theologians, inspired in part by Phillipians 2:6-8, suggested that the solution was to suppose that in order to be truly human, the incarnate God "emptied" Himself of at least some divine attributes--in effect becoming limited in knowledge and power, etc. That is, in order to authentically share in the human condition and live in solidarity with God's finite creatures, God didn't just pretend to be a finite creature alongside us but actually took on real finitude.

This idea of kinosis took on different forms among its advocates. Some thought it involved a total abandonment of the divine nature while others distinguished among divine properties--distinguishing God's moral attributes from God's "physical" ones (such things as omnipotence, omniscience, and timelessness) and arguing that the incarnate God preserved the former while abandoning the latter.

What is important to note for my purposes here is that this kenotic theory has implications for how we are to understand divinity. Marilyn McCord Adams, in Christ and Horrors, puts the point in these terms:

If partial absolute kenosis (the theory that Jesus is emptied of God's "physical" attributes but not the moral ones) retains the traditional claim that Father, Son, and Holy Spirit could not exist without being God, it insists that not all the perfections formerly thought to be essential to Godhead were genuinely necessary to It. So-called physical attributes are allegedly the permanent but contingent possession of the Father and the Holy Spirit, and are contingently had, then abandoned, then repossessed by the Son. Thus, it seems, with respect to some perfections, Godhead essentially includes a capacity for them but not their actuality. (Italics in original)
Here we have a theology which, metaphorically speaking, maintains that God can create a stone so heavy that God cannot lift it--that, in other words, it is in the power of God to impose real limits on God's capacity to exercise power (as well as on God's knowledge, eternity, immunity from harm, etc.) but that the God so limited remains God.

Another variant of kenosis can be and has been posited apart from the uniquely Christian concern with making sense of the incarnation. Specifically, some have argued that the very act of creation is an act of the divine imposing limits on itself--that a divine withdrawal and abdication of power is essential for establishing the "otherness" of the created world, thus preserving its status as a reality distinct from God that can evolve on its own terms and eventually acquire (in accord with its own rules) the capacity to autonomously enter into a self-other relationship with God. This is an idea articulated, for example, in the kabbalistic notion of Tzimtzum, and it is also expressed in the writing of Simone Weil. Put simply, the idea is that the existence of a universe that isn't simply swallowed up into God requires the establishment of a kind of boundary or demarcation between God and the created world, one which implies limits on what God can do in relation to that world. On this view, in effect, the act of creating the universe is an act of creating a stone that God cannot lift.

The question then becomes, does God remain God after creation if the act of creation necessitates divine limitation? Or, perhaps better, do those who ascribe to theological views like Tzimtzum have to give up calling the object of their religious devotion God? I don't think so, but if not it makes little sense to insist that "God" just means what is expressed in the traditional substantive definition above. The fact is that people who believe in God can disagree about just how essential the various properties ascribed to God in this definition really are.

And someone who thinks God in fact possesses all of the properties identified in the traditional definition may well agree that these properties do not define God. For example, you might well think that my eyes are a particular shade of blue. But suppose someone demonstrated to you that it was physiologically impossible for human eyes to possess that specific shade, given the manner in which eye color arises. Would you conclude that I don't exist? Surely not--because, although you thought I possessed this specific property, it was never a property that you took to be definitive of me.

Likewise, there is presumably room to accept that a certain property you had formerly attributed to God is one you must give up on, without thereby being forced to give up on the claim that there is a God. But this raises in a new way the question of what, precisely, a theist is asserting when they assert that God exists. If someone ceases to be a theist--what, specifically, are they denying that they had once believed? And why is it that some undergo radical reconceptions in their beliefs while still professing to be theists? What is it that they still believe that warrants holding onto the "theist" label?

This is what I think a functional definition--a definition in terms of the role or function God fills in the life of the devoted theist--is helpful for. In class the other day, a student defined God, roughly, as that in which he could place his hope in times that otherwise would call for despair. This is a functional definition. Given this understanding of God, the believer might radically change their idea of God--but so long as God, thus characterized, could be a source of hope in the midst of despair for those who believed in it, it would still qualify as "God."

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