Entry 0265: Actus Essendi and Existence (IX)
Professor Kevin White reports on the two meanings of esse, namely, the esse that refers to the metaphysical principle of actus essendi and the esse that refers to the fact of existence.
After giving relevant quotations from Cornelio Fabro, Joseph Owens, and John Wippel, professor White concludes that
All three interpreters agree that esse and essence are distinguished as two principles of a peculiar kind, namely, metaphysical or entitative principles. Fabro introduces the further suggestion that esse as principle must be distinguished twice: not only from (1) the essence that is its fellow-principle, but also from (2) the ‘result’ of esse as principle, namely, ‘existence which is the fact of being.’ It is the requirement of this second distinction that Owens denies and that Wippel reasserts (while describing the ‘result’ as ‘esse as facticity’).
Kevin White, “Act and Fact: A Disputed Point in Recent Thomistic Metaphysics,” The Metaphysics of Aquinas and its Modern Interpreters: Theological and Philosophical Perspectives, 31st Annual Conference of the Center for Medieval Studies, Fordham University, Lincoln Center, New York, March 26-27, 2011.