The Three Elements of the Mind

Augustine's real innovation in the philosophy of mind is exactly this idea that there's a third element. And that's this element which he calls the will or the element of desire. Instead of thinking of that as a subordinate element, Augustine thinks that it's really constitutive. So the intellect wouldn't be an animal, it wouldn't be alive if it weren't an expression of will or desire since that's what it is to be alive. But what makes it a case of thinking this particular thought is will or desire or love. That he thinks is fundamental to life.