What he wants is an understanding of the way in which concepts like those of things, forces, space, time, causation determine the way we think (and have to think) about the world. The intention is not to deny some element of scientific understanding, or indeed common sense, but to explain how those elements hang together in our thought. It is those thoughts that structure what he calls the ‘phenomenal world’: the world that is both described by science, and is manifested to us in sense experience.
