[403:3] Cf. F. A. Lange: _History of Materialism_, Book II, Chap. I, on _Kant and Materialism_; also Alois Riehl: _Introduction to the Theory of Science and Metaphysics_. Translation by Fairbanks. The more important writings of this school are: Hermann Cohen: _Kant's Theorie der Erfahrung_; _Die Logik der reinen Erkenntniss_, and other works. Paul Natorp: _Sozialpädagogik_; _Einleitung in die Psychologie nach kritischer Methode_, and other works. E. Cassirer: _Leibniz' System in seinen wissenschaftlichen Grundlagen_. Riehl: _Der philosophische Kriticismus, und seine Bedeutung für die Positive Wissenschaft_. Cf. also E. Husserl: _Logische Untersuchungen_. [404:4] Cf. J. M. E. McTaggart: _Studies in Hegelian Cosmology_, Chap. III. [404:5] Cf. Royce: _The Conception of God, Supplementary Essay_, pp. 135-322; _The World and the Individual, First Series_. [405:6] This movement began as a criticism of Hegelianism in behalf of the human personality. Cf. Andrew Seth: _Hegelianism and Personality_; _Man and the Cosmos_; _Two Lectures on Theism_. G. H. Howison: _The Limits of Evolution_. The important writings of the more independent movement are: William James: _The Will to Believe_. H. Sturt, editor: _Personal Idealism, Philosophical Essays by Eight Members of Oxford University_. F. C. S. Schiller: _Humanism_. Henri Bergson: _Essai sur les données immédiates de la conscience_; _Matière et mémoire_. This movement is closely related to that of _Pragmatism_. See under § 203. [406:7] Cf. Bertrand Russell: _Principles of Mathematics_, Vol. I. Among the more important writings of this movement are the following: Giuseppi Peano: _Formulaire de Mathématique_, published by the _Rivista di matematica_, Tom. I-IV. Richard Dedekind: _Was sind und was sollen die Zahlen?_ Georg Cantor: _Grundlagen einer allgemeinen Mannigfaltigkeitslehre_. Louis Couturat: _De l'Infini Mathématique_, and articles in _Revue de Metaphysique et de Morale_. A. N. Whitehead: _A Treatise on Universal Algebra_. Heinrich Hertz: _Die Prinzipien der Mechanik_. Henri Poincaré: _La Science et l'Hypothèse_. For the bearing of these investigations on philosophy, see Royce: _The Sciences of the Ideal_, in _Science_, Vol. XX, No. 510. [407:8] The term used by Karl Pearson in his _Grammar of Science_.