It is the joyous duty of philosophy to bring into systematic harmony the various views which mankind has held and will ever hold, however conflicting they seem on the surface, by assigning the different types to their proper levels and by providing a total view of the possible heights and depths of human thought. Thus and thus alone the most opposite tendencies of belief and the most striking contrasts of outlook are brought within a single scheme. All become aspects, more or less limited, only. None ever achieves metaphysical finality and need ever again be mistaken for the whole truth. All become clear as organic phases of mankind's mental development. Philosophy alone can bring logically opposite doctrines into harmonious relation with each other by assigning them to their proper places under a single sheltering canopy. Thus out of the medley of voices within us philosophy creates a melody.
-- Notebooks Category 20: What Is Philosophy? > Chapter 1: Toward Defining Philosophy > # 481
-- Perspectives > Chapter 20: What Is Philosophy? > # 18