History of Modern Philosophy / From Nicolas of Cusa to the Present Time

The Psychology of Revolution

A Short History of Greek Philosophy

The Principles of Masonic Law / A Treatise on the Constitutional Laws, Usages and Landmarks of / Freemasonry

Five Stages of Greek Religion

Three Philosophical Poets / Lucretius, Dante, and Goethe

Christianity and Greek Philosophy / or, the relation between spontaneous and reflective thought / in Greece and the positive teaching of Christ and His / Apostles

The French Revolution

Dialogues Concerning Natural Religion

The Practice and Theory of Bolshevism

A History of Indian Philosophy, Volume 1