"The history of Roman Catholic bioethics is completely intermingled with that of Catholic morality more generally. Although that morality continues to be expounded and developed by moralists working in the Roman Catholic tradition, its overall history is largely unwritten. There is, of course, a large body of established scholarly work on the great figures of Roman Catholic moral theory, especially on St. Thomas Aquinas and St. Augustine there are also studies on the history of Catholic moral teaching on particular moral issues, including abortion (Connery 1977), the distinction between ordinary and extraordinary treatments (Cronin, 1989), and contraception (Noonan, 1965). Finally, there are systematic treatments of Catholic bioethics (Ashley & O’Rourke, 19889). But there is no comprehensive study of the history of Catholic moral theology, much less the history of Catholic bioethics. In particular, little has been done to trace the development of Catholic moral thought in the period most essential for the development of distinctive Roman Catholic positions in bioethics – that is, the period from the sixteenth century Spanish scholastics to the dominance of the moral manuals in the half century before Vatican Council II."