Humanism

Solitude

Principles of nature

The Colloquies, Volume 2

Debating Humanism

Ingersollia

The works of Mr. Thomas Brown

Man's Redemption of Man: A Lay Sermon

A Plea for Atheism

Is the Morality of Jesus Sound

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

The Drama of Love and Death: A Study of Human Evolution and Transfiguration

Philistine and genius

Christianity Unveiled

An Address to Men of Science

The Vocation of the Scholar

A Handbook of Freethought Containing in Condensed and Systematized Form a Vast Amount of Evidence Against the Superstitious Doctrines of Christianity

Dangerous Dilemmas: Startling but True

The Quest of the Simple Life

The philosophy of Elbert Hubbard

Two Dyaloges (c. 1549)