Rand ping. It’s about philosophy, and it’s a bit heavy to read.
Nevertheless, mapping this model of the Golden Mean to ethics is wonderfully illustrative but subject to the same sort of objection. Rand's problem with Judaeo-Christian ethics was itself problematic: despite a visceral rejection of such concepts as Original Sin her actual applied ethics were not only reminiscent of, but impossible to divorce from, her own Jewish upbringing. Can you have that without God? Rand says "yes", the author says "no".
Fun stuff. It catches me at work and so I'll have to self-ping it for later.