You can sympathize with Leiter and Weisberg for fudging on materialism. As a philosophy of everything it is an undeniable drag. As a way of life it would be even worse. Fortunately, materialism is never translated into life as it’s lived. As colleagues and friends, husbands and mothers, wives and fathers, sons and daughters, materialists never put their money where their mouth is. Nobody thinks his daughter is just molecules in motion and nothing but; nobody thinks the Holocaust was evil, but only in a relative, provisional sense. A materialist who lived his life according to his professed convictions—understanding himself to have no moral agency at all, seeing his friends and enemies and family as genetically determined robots—wouldn’t just be a materialist: He’d be a psychopath. Say what you will about Leiter and Weisberg and the workshoppers in the Berkshires. From what I can tell, none of them is a psychopath. Not even close.