In fact there are at least four ways in which we know the natural law. Deep conscience, the First Witness, is the one primarily responsible for “what we can’t not know.” The others concern “what we can’t help learning.” The Second Witness is our recognition of the designedness of things in general, which not only draws our attention to the Designer, but also assures us that the other witnesses are not meaningful. The Third Witness is the particulars of our own design – for example, the interdependence and complementarity of the sexes. The Fourth Witness is the natural consequences of our behavior. All four work together.
