Where did the notion of 'moral duty' come from? In The Invention of Duty: Stoicism as Deontology, Jack Visnjic argues that it was the Stoics who first developed

How do ethical norms relate to human nature? This comprehensive and interdisciplinary volume surveys the latest thinking on natural law.

Practical answers to the urgent moral questions of our time from the ancient philosophy of Stoicism Twenty-three centuries ago, in a marketplace in Athens, Zeno

What distinguishes evils from ordinary wrongs? Is hatred a necessarily evil? Are some evils unforgivable? Are there evils we should tolerate? What can make evil

Explore the mysteries of morality and the concept of right and wrong with this accessible, engaging guide featuring basic facts along with an overview of modern