The Psychology of Nations / A Contribution to the Philosophy of History

Philosophy and Religion / Six Lectures Delivered at Cambridge

The Sexual Question / A Scientific, psychological, hygienic and sociological study

The World's Greatest Books — Volume 13 — Religion and Philosophy

The Works of Aristotle the Famous Philosopher / Containing his Complete Masterpiece and Family Physician; his Experienced Midwife, his Book of Problems and his Remarks on Physiognomy

Introduction to the Philosophy and Writings of Plato

The World's Greatest Books — Volume 14 — Philosophy and Economics

The Bible, King James Version, Complete

Talks To Teachers On Psychology; And To Students On Some Of Life's Ideals

Taboo and Genetics / A Study of the Biological, Sociological and Psychological Foundation of the Family

The Symbolism of Freemasonry / Illustrating and Explaining Its Science and Philosophy, Its Legends, Myths and Symbols