In this article, I set forth my understanding of reciprocal causality between God and finite entities in three stages, beginning with Aristotle’s analysis of change in this world. Afterwards, I examine the way in which Aquinas used the causal scheme of Aristotle in his Christian understanding of the God-world relationship. Finally, I indicate how both Aristotle’s philosophy and Aquinas’s approach to the God-world relationship should be rethought so as to be more in line with contemporary scientific understanding of the evolution (...) of life from non-life and the emergence of progressively higher-order life-systems out of lower-order life-systems within creation. (shrink)