Religious

The Persian Mystics: Jámí

Toleration and other essays

On Mule Back Thru Central America with the Gospel

Theism; being the Baird Lecture of 1876

Professor Royce's Libel

Biology versus Theology

A Twentieth Century Idealist

Ethics and Modern Thought: A Theory of Their Relations

The Growth of Thought as Affecting the Progress of Society

David Hume on God

Proslogion

Lectures on the Proofs of the Existence of God

Hymn to King Helios

The Concept of Uncompromising Humanism

The Origin of Christian Science

Twofold

Europa reformata (English Edition)

The Lights of the Church and the Light of Science

The World Is About to Change

The Philosophy and Theology of Averroes