Moral tribes: emotion, reason, and the gap between us and them

Introduction: The tragedy of commonsense morality

Part 1: Moral problems

The tragedy of the commons

Moral machinery

Strife on the new pastures

Part 2: Morality fast and slow

Trolleyology

Efficiency, flexibility, and the dual-process brain

Part 3: Common currency

A splendid idea

In search of common currency

Common currency found

Part 4: Moral convictions

Alarming acts

Justice and fairness

Part 5: Moral solutions

Deep pragmatism

Beyond point-and-shoot morality: six rules for modern herders.