Constantin Brunner (1862-1937) was a philosopher of considerable originality and importance to whom all too little attention has been paid until quite recently. This book presents an outline of Brunner's life and personality, then proceeds to relate his philosophy to that of Plato, Spinoza, Kant, Hegel, Schopenhauer, Husserl, and Heidegger. There follows an analysis of Brunner's theory of knowledge, the framework of a complete philosophic system which, in many of Brunner's ideas, shows a similarity to that of his contemporary F. H. Bradley, often regarded as one of the greatest English philosophers. The themes in Brunner's work that Dr. Goetz pursues include: the synthesis of feeling, knowing, and willing; the question of objective knowledge; the relationship between life and thought; the proper understanding of "egoism"; and the ultimate goal of philosophy. Devotees of Husserl and existentialists of various types may be surprised to discover just how far Brunner anticipated the major thinkers in the field of phenomenology.