 Thus, on a standard reading of Book II, the prescriptive content of moral claims, along with their necessity and universality, led Kant to believe we know moral truths only a priori. However, some interpret Kant as saying that if a moral truth is a priori, then it must also be necessary and universal (Dancy 2007: 45). On this interpretation, if one knows P a priori, then P must be necessary; after all, it’s unclear how one could know a contingent truth without experience. Moreover, if P is necessary, then P must also be universal; for if P must be true, then it is true in every actual case. So, on this interpretation, Kant’s views about moral epistemology motivate his views about the content of moral claims, not vice versa. Regardless of which interpretation is correct, it’s clear Kant thought there is a close relationship between the content of moral claims and how we come to know them.