No Cause, No Credo:

'Aristotelian Realist Philosophy of Nature as Preambula Fidei'

Article by Daniel C. Wagner, Aquinas College, with responses by Michael Tkacz and Steven Baldner, at Reality: A journal for philosophical discourse.

"ABSTRACT: This study presents St. Thomas Aquinas’ groundbreaking treatment of the relation between God as Creator and nature through the Aristotelian model of natural causation and the distinction between essentia and esse contra occasionalist conceptions of creation. By clearly distinguishing primary (divine) and secondary (natural) orders of causation, the Angelic Doctor champions Divine omnipotence while preserving the causal integrity of nature at one and the same time. His position on the relation of divine and natural causation in nature is formulated, in part, as a response to the occasionalist doctrine, denying natural causation. While Thomas shows that denying natural causation would actually vitiate divine omnipotence, this study extends his argument showing Aristotelian causation (secondary cause) is a necessary condition—i.e., one of the preambula fidei—for the Christian belief that God is the all-powerful creator of the natural world. This presentation and extension of St. Thomas Aquinas’ critique of occasionalism is needed given a continuing trend among Anglo-American Analytic and Humean Christian philosophers to deny natural causation and hold that God is the only cause."

See Thomas Aquinas, Summa Theologica, in Great Books of the Western World (first edition, 52 Vol., 1952) volumes 19-20, and Great Books of the Western World (second edition, 60 Vol., 1990) volumes 17-18.