Our experience, Hume maintains, proves that “our actions have a constant union with our motives, tempers, and circumstances” and that we draw relevant inferences from one to the other on this basis (T 2.3.1.4/401). Although there are some apparent irregularities in both the natural and the moral realms, this is entirely due to the influence of contrary or concealed causes of which we are ignorant (T 2.3.1.11–12/403–4; cf. EU 8.15/88).