Abstract
This essay examines the metaphysical foundations of the natural sciences and Christian theology in order to complement the epistemic claims from both disciplines. These foundations include Robin Collingwood's notion of presuppositions and Ernan McMullin's epistemic and non-epistemic values. Specifically, the essay investigates the presuppositions and values of science and theology used for guiding and constraining the formation and evaluation of scientific theories and theological doctrines. Practitioners in both disciplines need to keep these presuppositions and values in mind when complementing epistemic claims to form a comprehensive world picture. Complementing scientific and theological claims requires wisdom and restraint in analyzing the presuppositions and values that make such claims possible. For, theology without the input of science, and science without the input of theology, may lead to an impoverished world picture.
