Tony,
I hate to agree with Moonstruck out of general principles, but he has gotten lots of things right, including this one.
Conservation of energy is not only an effective working principle, it is theoretically elegant.
It also has another fundamentally interesting property that I realized while discussing this issue on CAF, which I’m saving for the book. It is a property that you might appreciate.
Correct me if I’m wrong, but it looks to me that what is important to you and most every Catholic who cares to think about such issues, is the preservation of certain items of dogma. For example, the omnipotence and omniscience of God, and the belief that He created the universe from nothing.
I once was a devout Catholic. I cannot express the internal dismay I felt upon realizing the full implications of the Laws of Thermodynamics. Two of them limit God. I do not expect you to even approach any agreement with this at the moment, but here are some things to consider. And I trust that you will consider them, rather than simply react.
The ideas which men hold about the nature of the Creator were devised by men who had not looked through either a telescope or a microscope. They were good men who did their best with the tools and knowledge available. They invented ideas which they believed valuable and right. It is only a shame that after their time, other men came along and declared these ideas to be Absolute Truth, the Revealed Word of God.
I admit to the existence of only one Bible certain to have been written by God, and that is the physical universe itself. If God’s certain Bible contradicts the Bibles, Kuran’s, and various other writings of men, guess which one I, someone who believes in a created universe, chooses to trust?
Imagine that you had been raised agnostic, with the same education otherwise, and that you had a spiritual or mystical experience which compelled you to investigate the truth or falsity of atheism. You might investigate a number of religions, and without your previous indoctrination, have found things within each which made little sense.
Yet suppose you chose to believe that ours is a created universe, and sought to learn about the creator on your own. Might you not employ the same Bible as mine? If so, that Bible would teach you that energy, the stuff of the universe, cannot be created.
You might come to the conclusion that the creator did not manufacture the universe from nothing. Why should he, with this handy and malleable substance around that can be shaped into a variety of interesting and interactive forms?