Abstract

This paper aims to develop a concept of matter as something both knowable and relevant for the empirical test of our knowledge statements. In light of the debate between logical empiricism and phenomenology, the paper discusses the forms of realism and theory of experience revolving around the observable/unobservable and visible/invisible distinctions. On this basis, a notion of matter is outlined that is based on the concept of forceful quality, rather than on givenness. Finally, it is shown that the concept of forceful quality can be a good candidate for solving the paradox of categorization, by moving beyond the solutions proposed so far.