It has to be Sexual Personae, her magnum opus. I think I understand now where Macpherson is coming from, that if someone who is so antithetical to the Judeo-Christian worldview could come to the same conclusion as ours, that Euro-American civilization is on its last legs (to be replaced either by a new civilization or by the end of the world), that objective truth cannot be avoided, except by those determined to avoid it. Thank you!
Yes, that was the discussion.