 As already indicated, Marty conceives of philosophy just as Brentano did, namely as a discipline involving psychological considerations in all of its branches, both theoretical and practical. Philosophy of language is accordingly restricted by him to that domain of linguistic inquiry which is tied up with the science of mind or consciousness. Those areas of linguistics which can be investigated independently of psychology, e.g. phonology, are no part of philosophy of language. It is altogether unacceptable to Marty to regard philosophy of language as distinct from the science of language, as if they were two endeavors concerned with one and the same subject matter and yet differing in their methods (Marty 1908a: 4 f.). In this regard he never swayed from Brentano’s precept that the true method of philosophy is no different from that of the natural sciences.