 Philosophy thus understood is first philosophy insofar as its main task is to investigate the laws that provide the cohesion and unity between mind and nature. It is closely related to metaphysics or to what Stumpf also calls “metapsychics” to the extent that it presupposes psychology as much as physics. But unlike traditional metaphysics, which is thought of a priori, Stumpf’s view of metaphysics, as he repeatedly imparted since his first lectures on metaphysics in Würzburg, is based on experience insofar as it is continuous with the empirical sciences and proceeds inductively, i.e. according to a bottom-up approach. (D. Fisette, 2015c)