Lon
Well-known member
Hi Lon
While the quote from Aristotle may be taken to mean that God cannot undo something that exists at present, what is in view is not the thing as it exists now but as it was in the past. This God cannot undo. The thing as it exists now we both agree can be taken out of existence, but nonetheless it remains true that it existed.
Thus, Augustine writing Against Faustus (Book XXVI, 5) states:
“Accordingly, to say, if God is almighty, let Him make what has been done to be undone, is in fact to say, if God is almighty, let Him make a thing to be in the same sense both true and false. [...] But when a thing does not exist, the existence cannot be put a stop to. Now, what is past no longer exists and whatever has an existence which can be put an end to cannot be past. What is truly past is no longer present; and the truth of its past existence is in our judgment, not in the thing itself which no longer exists. The proposition asserting anything to be past is true when the thing no longer exists. God cannot make such a proposition false, because He cannot contradict the truth.
The truth in this case, or the true judgment, is first of all in our own mind, when we know and give expression to it. But should it disappear from our minds by our forgetting it, it would still remain as truth. It will always be true that the past thing which is no longer present had an existence; and the truth of its past existence after it has stopped is the same as the truth of its future existence before it began to be. This truth cannot be contradicted by God...”
Doing so would imply a contradiction, it would entail that a thing existed and didn’t exist at the same point in time, which is impossible. But as Aquinas says “there does not fall under the scope of God's omnipotence anything that implies a contradiction” (ST I, q.25 a.4), so God cannot make the past to not have been.
Hope that clears things up a little bit. I'll have to side with the open theists (godrulz and DFT_Dave) on this one, sorry!
Evo
There is a bit of a dilemma, in my thinking, with entirely wiping out the evidence. Granted we are talking about 'present' but it actually, in effect, changes the past of a sort that is undeniable. I tend to see your point and agree with it going one way looking at this, but must believe that a change in effect now, is a change of our past, and I'm not talking about sci-fi or the impossible but ramifications of omnipotence applied. It too, boggles my mind as an eternal past, but my point is to point to the logical premise of these attributes and continue to make logical and plausible arguments for a God who is beyond or comprehension but with inklings of communication from Him for us to latch onto. OV elevates man in God's mind. I think there is something special (imago deo) about us. It isn't an easy prospect playing imago deo against being creations. There is a bit of dichotomy from either perspective. I believe the Reformed emphasizes one point, and Arminian the other with the RC leaning more toward the Reformed (or rather visa versa, we are a bit extra-lean ).