“One of the deep prejudices that the age of mechanism instilled in our culture, and that infects our religious and materialist fundamentalisms alike, is a version of the so-called genetic fallacy: to wit, the mistake of thinking that to have described a thing’s material history or physical origins is to have explained that thing exhaustively. We tend to presume that if one can discover the temporally prior physical causes of some object—the world, an organism, a behavior, a religion, a mental event, an experience, or anything else—one has thereby eliminated all other possible causal explanations of that object. But this is a principle that is true only if materialism is true, and materialism is true only if this principle is true, and logical circles should not set the rules for our thinking.”