The question is this: If God is omnipotent, then can he create a stone which he cannot lift (cause to rise)? If the answer is 'no' then , the critic reasons, there is something God cannot do, namely, create the sort of stone in question, and so he is not, after all, omnipotent. If the answer is 'yes', he can create such a stone, then again there is a task he cannot perform, namely, lift the stone once created, and therefore again he is not omnipotent. Regardless of which answer is given, the conclusion follows that God is not omnipotent (p. 408).The upshot of the paradox is not simply that God must fail to be omnipotent, but rather it's that omnipotence isn't a coherent property--no being could be omnipotent.
Morris dismissed the paradox as a "silly little brain-teaser." Morris thought that the theist can consistently say that God isn't able to create such a stone and that God is omnipotent. He thought that the description of the action of creating a stone too heavy for God to lift is incoherent and so we do not specify any activity that is beyond God's power when we say that "God can't create a stone too heavy for Him to lift." Morris also suggested that the theist can consistently claim that God could create a stone too heavy for Him to lift while still maintaining that God is omnipotent. Morris claims that "...we can block the inference to his (God's) lacking omnipotence by explaining that the subsequent inability to lift cannot be thought of as reflecting the lack of any power it is possible to have" (p. 410).
I'm going to focus on his second suggestion. It certainly appears that one has described a possible power when one says "the power to lift that really heavy stone, S, that God just created." But Morris contended that this is a mistake. His argument is subtle. Following Kenny, Morris argued that if God were to create a stone that had the property of being unliftable (even by God), then this "power to lift that stone" doesn't actually pick out or specify any coherent power that a being could have. This is because, the stone is unliftable and it's not possible to have the power to lift something that cannot be lifted. As Morris put it, "Thus, lacking a power to lift S is not lacking a possible power, a power possible to have, and so no such lack would detract from God's being omnipotent."
What do you make of Morris's argument here? Do you find it persuasive? How might one object to this line of reasoning?