Rationalism

Montaigne and Shakspere

The Evolution of States

The Historical Jesus

A Short History of Freethought Ancient and Modern, Volume 1 of 2 Third edition, Revised and Expanded, in two volumes

A Short History of Freethought Ancient and Modern, Volume 2 of 2 Third edition, Revised and Expanded, in two volumes

A Short History of Christianity Second Edition, Revised, With Additions

The Jesus Problem