During the twentieth century, moral relativism was in vogue in elite cultural circles, but now it is the dominant moral outlook of the broader culture. Against this, C.S. Lewis argued for “the universality and inescapability of the moral law.” Although there are subtle moral differences between cultures, if we look close enough, we can discern fundamental moral agreements. The Catholic tradition says that this moral bedrock is a reflection of the Eternal Law in the mind of God. It is the voice of God within us. Listen to that voice.