Could you enlighten me on the difference between a theological concept that has been taught by the church and theological doctrine? If there is a difference at all, is it a difference in kind or only degree?
Sure, it’s certain a difference in kind. A theological concept would not be a matter of belief required for salvation, although to be fair, theological doctrines
are theological concepts. But I guess a doctrine is an article of faith, whereas a concept is not. So, doctrines would include: the Incarnation, the assumption of Mary, the Trinity, etc., whereas concepts would include: how many angels there are, what is meant by Jesus’ atoning death, perhaps even some specific interpretation of Scripture. The first category, I suggest, entails belief
in something, whereas the second is more explanatory, understanding
how something is. Therefore, belief in the sanctity of human life and moral law would imply that abortion is wrong, whereas the Chain of Being is more a belief about how the universe is structured. I think the point can be made most clearly in considering Jesus’ death on the cross. As Catholics, we need to believe that Jesus died on the cross and through his death achieved our salvation.
How he achieved this - that is, what precisely is meant by atonement - is a matter of debate and not of doctrine.
I agree that the church makes a clear stipulation that people are ensouled, but I’m not so sure they’ve made a definitive statement about what exactly the soul is–and I’m even less certain that the function of the soul you and aristotle describe apply in this situation.
Don’t get me wrong, that quality of the soul–the animating principle, the organizing element–is certainly one of its qualities. However, That aspect of the soul is share by all living creatures, and is entirely physical. When I speak of attaining personhood when flesh is ensouled, I’m speaking strictly about when the flesh gains the spiritual, supernatural nature of the soul. Actually, a human’s “spirit” is probably a better word for what I’m considering here. I would say that it is when a person recieves his “spirit” that he truly becomes a person, distinct from any other living thing.
Now then, this spirit is not necessarily tied to humanity. God has the ability to put a human spirit into anything, or withold it from humans if he so chooses. it is not necessarily tied to biological humanity. Thus, our spirits, the supernatural aspects of our souls, can come into existence at any arbitrary point in the development of a biological human being, from sentience, to birth, to baptism, to the development of a distinct personality.
The soul exists inextricably with the materiality of the person: you can’t have one without the other. Any person, no matter at what stage of development, is ensouled. You don’t become ensouled at any particular point and this is where Aquinas went wrong, because he believed - due primarily to a poorer understanding of biology - that the foetus went through developmental phases, so that at one point it gained a rational or human soul, before which it had a different kind of soul. However, he did believe a human always had a soul, just not always a rational soul.
I see what you’re saying but I don’t think there is a stage where this happens: it always is the case. I think the “en-spiriting” of a person can only come at two stages: either with conception - since there is no dramatic change in substance of the human after this point; a foetus is only a developing human, after all, not different species - or with baptism - since baptism does effect substantial change in the person.
I’m not sure that God can put the human spirit into anything. If you mean “personality” well, sure, because angels are persons, as is God. Also, I don’t see how a person could be ensouled before conception - there is nothing to conceive. We are not spiritual substances that gain a body, but we
are body and spirit/soul.
As for our DNA, which could be engineered to create other human beings, well, as it stands, DNA is just DNA. If it were ever used to create another human being, at that point where another human being was created (in whatever primitive stage of development), then it would be immoral to kill it.
Let me quickly stipulate that I think it is a natural moral law not to kill any person, not necessarily a human being. The big sticky points in this whole issue are:
Under what conditions can you classify an organism as a distinct biological human being, without those classifications being arbitrary?
and
Does ensoulment occur when there exists a distinct biological human being, or at some later (or earlier!) date?
I know what you’re saying. Yes, it is immoral to kill an innocent person, be they human, a member of another species, an angel (if that were possible), etc. However, I’m not sure there are any conditions under which a human being
is not a person.
Since ensoulment is the form of the body, it would certainly occur with a distinct biological human being, provided, of course, it is a human being, not merely a human organism, like a foot, DNA, etc. To be honest, my biology isn’t really good enough to answer your question - about the classification of a distinct biological human being - very well. I’ll have to do some more research and get back to you.