Abstract

After a short summary of the interpretation of Thomas Aquinas’ conception of being given by E. Gilson, according which the actus essendi is existence, the article sets out the criticisms addressed to this conception by P.T. Geach and A. Kenny, showing that they converge with the criticism developed by the author himself in an article of 1979 on Aristotle. In the author’s view, the best reply to this criticism given by the Thomists is the reply of S.L. Brocks, who has shown that the actus essendi is the perfect way of being which belongs only to God. The author shows that this conception is confirmed by some passages of Thomas’ De ente et essentia.