A Pluralistic Universe / Hibbert Lectures at Manchester College on the Present Situation in Philosophy

Essays in Radical Empiricism

Readings on Fascism and National Socialism / Selected by members of the department of philosophy, University of Colorado

The Theories of Darwin and Their Relation to Philosophy, Religion, and Morality

The Positive Outcome of Philosophy / The Nature of Human Brain Work. Letters on Logic

Biology / A lecture delivered at Columbia University in the series / on Science, Philosophy and Art November 20, 1907