A Puzzle Regarding Reid's Theory of Motives

In Essays on the Active Powers, Thomas Reid offers two different accounts of motives. According to the first, motives are the ends for which we act. According to the second, they are mental states, such as desires, that incite us to action. These two accounts, I claim, do not fit comfortably with Reid's agent causal account of human action. My project in this article is to explain why and then to propose a strategy for reconciling these two accounts with Reid's views about action.