Humanism

Immortal Youth: A Study in the Will to Create

Through Nature to God

The Logic of Vegetarianism

Superstition In All Ages

Where Are We Going

Notes of a Private

A World Without God

Tragic Sense Of Life

The Destiny of Man, Viewed in the Light of His Origin

Lectures of Col. R. G. Ingersoll – Latest

The Gods

A History of Freedom of Thought

The Principles of Secularism

Sartor Resartus, and On Heroes, Hero-Worship, and the Heroic in History

Creed and Deed: A Series of Discourses

Evolution and Ethics

Erasmus Against War

Why I Do Not Believe in God

Prisoner for Blasphemy

An ethical philosophy of life presented in its main outlines