Abstract

Hume's examination of the causal maxim in 1.3.3 of A Treatise of Human Nature can be considered, at least in part, a thinly veiled critique of the cosmological argument, attacking as it does the privileged status of the principle upon which that proof rests. As well, Hume's remarks on the impossibility of demonstrating matters of fact a priori in Part 3 of Section 12 of An Enquiry concerning Human Understanding clearly strike at the heart of the ontological argument, even if not explicitly. Unfortunately, it is only in the very brief Part 9 of his Dialogues Concerning Natural Religion that Hume directly discusses, at any length, the attempt to demonstrate a priori the existence of a deity. The argument, put forward by Demea, and Cleanthes's criticism of that argument take up so little space that for ease of reference I will reproduce them before we proceed any further. Part 9 consists of eleven paragraphs, and in accordance with a now fairly common convention, I will refer to the paragraphs by number. I reproduce only those paragraphs that will be the focus of this paper.