The life of moral philosopher Alasdair MacIntyre, who passed away last month at age 96, constituted a roaming intellectual and spiritual journey. His critique of secular moral theories that had emerged out of the Enlightenment as abject failures should cause people of faith to pay attention to his writing. Daniel Rynhold observes that most Orthodox Jews have been exposed to MacIntyre through his profound impact on the thought and teachings of R. Jonathan Sacks—and encourages us to dig deeper into the source.