Abstract

The thick-esse /thin-essence view asserts that esse—the act of existing—constitutes all of the ontological positivity, perfection, and intelligibility of a being, while essence is simply an internal limitation or mode of the esse of a being. In this paper I explain why Fr. W. Norris Clarke’s Thomistic personalism relies on the thick-esse /thin-essence view; acknowledge three objections to the thick-esse /thin-essence view; reply to these objections; and provide a positive argument for the thick-esse /thin-essence view. I conclude that Clarke’s reliance on a thick-esse /thin-essence view does not militate against his Thomistic personalism; on the contrary, it militates in its favor. In order to reach this conclusion, though, I make it clear that the details of Clarke’s thick-esse /thin-essence view must be modified to fall in line with the details of William E. Carlo’s thick-esse /thin-essence view.