Abstract

The metaphysical study of ens qua ens and its transcendental properties requires an ontological foundation according to intrinsic causes and a theological foundation accord-ing to extrinsic causes. Following the method of resolutio secundum rationem, Aquinas founds the transcendental properties of ens in se and the transcendental proper-ties of ens in ordine ad aliud on the real composition of essence and actus essendi in creatures. The theological foundation follows the method of resolutio secundum rem and involves the notions of transcendental participation and analogical cau-sality. The analogical predication of the transcendentals of God and creatures is based on the extrinsic relations of causality. Each transcendental is seen to involve a predominate causal line: for example, unum and efficient causality, verum and ex-emplar causality, bonum and final causality. Res and aliquid are also provided with theologi-cal foundations: a creature is res due to the exemplary determination of its essence and is aliquid due to the distinction and diversity effected in creatures by the divine ideas.