<p>How does thinking in terms of truth contribute to our knowledge of the world? Moreover, what might the answers to this question tell us about truth itself? The aim of this paper is to canvas several roles of the truth concept for first-order inquiry (that is, inquiry into extra-linguistic and extra-mental reality) and then relate these answers to the ongoing inflationism-deflationism debate. I argue that the deflationary conception of truth is more versatile than is often appreciated, but there is nonetheless one role that is uniquely inflationary. I call this role ‘representing semantic determinants’. In short, I argue that inflationism permits substantive explanations of the truth-conditional semantic facts and that such explanations can occasionally play a role in investigating certain first-order claims.</p>