1924. An introductory text to purposive psychology. Contents: The Meaning of Character; Science and Philosophy; The Concepts of Science; Physical Causation; Reality Independent of Mind; The Escape from Solipsism: The Absolute; The Escape from Solipsism: Pluralism; Realistic Theories; Reality; Final Causes; Evolution: Cosmic Evolution; Evolution: The Elements; the Earth; The Beginnings of Organic Evolution; Functions of Organisms; Organic Evolution; Theories of Evolution; Body and Mind; and Application of the Theory of Monads to the Theory of Evolution and to the Theory of Character.