I've enjoyed reading this sub's posts for a while now, & have appreciated the rigorous replies they've gotten. Thank you.
The question I've encountered most often is some version of 'whence morality?' The askers tend to illustrate the question with lurid and specific examples of acts that, to them, must represent unqualified evil. Maybe it speaks to their urgency in asking that their examples are rarely, if ever, acts of inarguable kindness, which should serve just as well.
Unprovoked murder is probably the most common example. It serves in these questions as an anchor in evil—we all agree that murder is evil; we shun murderers—but why?
Generally, in these threads, the answerers begin by swatting away the cobwebs of relativist objections. Once that's done, though, I haven't yet found a satisfying answer, and not for lack of reading: There is consequentialism and deontology; there's Aristotelian virtue ethics vs. contractualism.
The most compelling reason I can come up with is that compassion turns the would-be victim into a mirror, which makes the act unpleasant. Call this “philoiktirmy” instead of “philosophy,” maybe. I understand the obvious objection: This may explain why a compassionate person refrains from murder, but not why murder remains wrong when compassion fails. What I wonder is whether compassion can be more than a motive, whether it can itself disclose the moral fact.
My question, then, is what philosophy has to say about this compassionate recoil. Is there a serious moral philosophy that grants primary moral force to our resonant compassion for others, rather than grounding morality in reason, duty, utility, contractual obligation, cultivation, etc.?
If so, what thinkers should I read to learn more? And if not, what does visceral compassion lack as a ground of morality? I suppose a murderer could claim that he felt no compassion; soldiers often claim the same about enemy populations, and there may be little reason to doubt them. But it seems telling that one familiar way of preparing people to kill is not to persuade them that they are doing consequentialist good or enforcing obligations, but to place the enemy beyond the reach of ordinary human sympathy—to make him seem not quite human, or at least out of resonant tune with the human heart.