Agreed; it seems likely that the axiom system of the typical pro-life defender[0] is closer to "It's always wrong to end an innocent life"; this requires the in

Agreed; it seems likely that the axiom system of the typical pro-life defender[0] is closer to "It's always wrong to end an innocent life"; this requires the inclusion of a set of axioms defining innocence (and thus probably invoking some combination of free will, and an absolute moral axis. A convenient framework for this includes a soul). This way you preserve the ability to defend yourself, to take the life of an enemy soldier, etc, while still being able to justify a pro-life position. It also allows for the death sentence for murderers. --- 0. there are, of course, different sets of axioms that arrive at superficially similar conclusions. For example, the category of pacifist that believes that any loss of life is not justifiable; this kind of person will reject both abortion and ownership of weapons, war, etc.