 The designation of the will as rational appetite, its end as goodness and its relationship to the intellect are well-known features of medieval followers of Aristotle and need not be treated at length here. What is of more interest in a discussion of practical reason is the analysis of those first principles which regulate moral reasoning. Thomas in developing the ideas of his former teacher, Albert, insists that the will must be moved by an end that is perceived as good. (S. th. I–II, 6, 1 &amp; 8, 1; Super ethica, VI, 7, pp. 436–437). More specifically he argues that: