The Metaphysics of Morals

“Kant's mature system of ethics and law, built on the principle laid down in the 'Groundwork.' The Doctrine of Right sets out the rights of persons, property, contract, the state and punishment, the law of nations and the hope of perpetual peace; the Doctrine of Virtue sets out the duties we have to ourselves and to others, as ends we are bound to adopt — our own perfection and the happiness of others.”