Abstract

Augustine’s use of the concept of rationes seminales in his interpretation of Genesis 1 and 2 enabled him to assert that although God created everything instantaneously, in the initial state of the universe all species were present in the potency of the primordial matter, to be actualized at the consecutive stages of the history of its transformations and development. Despite its interpretation as evolutionary in the writings of Mivart, Zahm, and Dorlodot, Augustine’s model did not, in fact, assume a gradual transformation of one species into another – which became the main objection from the point of view of the advocates of Darwin’s theory of evolution. Moreover, the possibility (if not necessity) of direct divine interventions in the unfolding of rationes seminales made Augustine’s notion of creation even more inadequate in its encounter with modern biology and the philosophical reflection it inspires. This article critically analyzes Aquinas’s use of Augustine’s concept of rationes seminales and develops a constructive proposal of the Thomistic metaphysics of evolutionary transformism – based on Aquinas’s embracement of Aristotle’s moderate realism about universals, including species, grounded in hylomorphic metaphysics of substance.