A Cumulative Case for the Pro-Life Position

I'm taking a brief break from my current series of articles on Thomson's Defense of Abortion. Currently in Tasmania, lawmakers are considering decriminalizing abortion. I was asked to compose a letter making as strong a case as possible for the pro-life position and send it to the lawmakers, hopefully causing them to think twice about doing so. I would like to share my letter since I think it could be helpful. When I discuss or debate abortion, I tend to prefer to make a cumulative case for the pro-life position. That's what this letter has been based on. Now granted, I don't cover any pro-choice arguments in this letter, but it was getting lengthy as it is. Besides, I have written articles critiquing and responding to these arguments in the past (with more to come in the future). The body of the letter is in full below. I will add footnotes with additional information and comments that I'd like to add.

The Substance View

I have given you my own basic argument for the pro-life position. But now I’d like to examine two more arguments, what I consider to be the two strongest arguments for the pro-life position. The first is by a Catholic philosopher, whose argument is grounded in intuitions that most people agree with. The next argument will be by an atheist (I’ll leave who it is a mystery, but those who are well-read in the abortion issue will likely know who I’m talking about).