Chicago: Charles H. Kerr & Company, 1918. — 165 p.
Causes of Belief in God.The Religious Bourgeoisie and the Irreligious Proletariat.
Natural Origins of the Idea of God in the Savage.
Economic Origins of the Belief in God of the Bourgeois.
Evolution of the Idea of God.
The Origin of Abstract Ideas.Contradictory Opinions Regarding the Ori gin of Abstract Ideas.
Formation of the Instinct and of Abstract Ideas.
The Origin of the Idea of Justice.The Law of Retaliation — Retributive Justice.
Distributive Justice.
The Origin of the Idea of Good.Formation of the Heroic Ideal.
Decomposition of the Heroic Ideal.
The Bourgeois Moral Ideal.