I have thought much on this question, and I have concluded that God will not be needed for any eventual TOE. In fact, the question of His existence either way shall play no part. There are only four possibilities: 1. Assume there is no God. Assume no TOE is ever found. God's existence is irrelevant. 2. Assume there is no God. Assume a satisfactory TOE is found. God's existence is irrelevant. 3. Assume there is a God. Assume no TOE is ever found. God's existence is irrelevant. 4. Assume there is a God. Assume a satisfactory TOE is found. This is the only alternative in which God's existence might, at least initially, be conjectured to be relevant. The entire rest of this thought follows the assumption that God exists. I do not want to have to keep clarifying that I am talking about Alternative 4 in the following reasoning. It is in the model of (God intersection TOE|…) then… Those who claim the existence of God universally declare that His attributes are found in this physical universe. For instance, gravity is the physical reflection of the attractive power of God's love. Light, by which we see, is the physical manifestation of the spiritual reality of His Truth. And so on. Depending upon the belief system, the physical forces are actually, physically God, or are symbolic representations of God’s attributes. I do not think there is any belief system that does not specify this in one way or another. Certainly, this is the case of the major world religions (Hinduism, Christianity, Islam, Zoroastrian, Bahá’í, etc.). Furthermore, there exists a relationship between His love and His Truth, even if we do not know at this time all the laws governing that relationship. There is a relationship between gravity and light, even if we do not know at this time all the laws governing that relationship. Those who insist on the existence of God go on to tell us He created us purposefully. In fact, anything this God does MUST BE purposeful. Else the whole point of our creation is meaningless, and the whole definition of God becomes nonsense. From this we draw the conclusion, and the God proponents say the same, that one of the reasons God put us in this physical plane of existence is so that we shall discover these Truths and these relationships, as well as the relationship between God and ourselves. Clearly, one of the paths to Him which He gave, then, is this reflection of the spiritual Truths in the physical reality. He has put His signs everywhere, say the God proponents, in infinite ways, in order to accomplish this. A tautology MUST BE that if God is Infinite, and His creation reflects His Truths, then His signs are manifest in infinite ways. In fact, there is no quality claimed of God that is not reflected somehow in this physical plane: He creates, mothers give birth, the Big Bang bangs. He is just, we set up court systems and teach children to take turns. Mohammed says all things He created male and female. We have conservation and equal and opposite reaction. He is infinite. The creation is infinite (parallel universes and so many other theories...). Consequently, given a God, the initial creation of the whole universe must be a reflection of one or more spiritual realities. Since the physical universe reflects these spiritual realities, there will be physical correspondences to this creation. There is cardinality between spiritual Truth and physical manifestation. Since those who claim God exists say we were meant to discover the spiritual realities, and since this universe reflects those spiritual realities, there will be discoverable spiritual realities that are physically reflected in the origin and workings of this cosmos. Thus, regardless of whether there may be a reason to say the original Cause could not have existed without God, by the explanations of those who are God proponents, we need not have God present in order to discover the reality of the origin of the universe. We need to find the physical reflection in this plane of whatever spiritual realities caused the origin. Just as we did not use God to discover any of the other realities of modern physics, we do not need God to discover this one. Given God, or not given God, that physical reality exists now. Apparently, by the arguments of the God proponents, we are meant to discover it, as one more sign of the reality of God, and one more way to increase our understanding of His nature. To sum, creation must have a physical cause and the physical signs are meant to be discovered. Hence, they are discoverable. Hence, God's existence is irrelevant to a TOE under any alternative.