Social

Multiple Perspectives on the Study of Life

A Decent Life

Models, Metaphors, and Intuition

The Growth of Thought as Affecting the Progress of Society

Altruism: Its Nature and Varieties

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

Why

The Arc of Love

The Basis of Morality

A Letter to Dion

The Authenticity Hoax

Introducing Machiavelli

A Vision of the Future, Based on the Application of Ethical Principles

The God of Civilization

An Address to Men of Science

The Philosophy of Beards

An apology for idlers, and other essays

A Critical Analysis of Patriotism As an Ethical Concept

The Human Origin of Morals

The Philosophy of Earthquakes, Natural and Religious