A Short History of Greek Philosophy

Voltaire's Philosophical Dictionary

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

A Discourse of a Method for the Well Guiding of Reason / and the Discovery of Truth in the Sciences

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

A Letter to a Hindu

On the Origin of Species By Means of Natural Selection, or, the Preservation of Favoured Races in the Struggle for Life

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

The Philosophy of the Moral Feelings

Criminal Sociology