 The two most important names associated with the young Stumpf’s philosophical formation are those of Franz Brentano and Hermann Lotze. His debt to Brentano is well documented in his autobiography and in the three biographies, which Stumpf (1918, 1919, 1922) devoted to him after his death in 1917. But opinions diverged regarding Stumpf’s later position to Brentano’s philosophical program. Some claim that Stumpf is a truly orthodox Brentanian (K. Schuhmann, 1996) while others argue that Stumpf gradually distanced himself from Brentano’s thinking and moved closer to that of Lotze (Ewen, 2008 Milkov 2015). The truth must lie somewhere in the middle if we are to judge the matter in light of Stumpf’s many testimonies in his biographical articles and in his substantial correspondence with Brentano where he unequivocally acknowledges his debt to Brentano.