Social

The Inevitable Crimes of Celibacy

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

The Complete Essays by Herbert Spencer (Vol. 1–3)

Hegel: Lectures on Philosophy

The Ethics of Diet

The Ruins; Or, Meditation on the Revolutions of Empires and the Law of Nature

The Arc of Love

The Authenticity Hoax

Why

Altruism: Its Nature and Varieties

A Letter to Dion

The Basis of Morality

A Book of Gems, or, Choice selections from the writings of Benjamin Franklin

Reflections; or Sentences and Moral Maxims

Two Addresses

The Idiot: His Place in Creation, and His Claims on Society

The Growth of Thought as Affecting the Progress of Society

The Sin and Danger of Self-Love

Fifteen Discourses

Ethical Relativity