Utilitarianism may well be the most influential secular ethical theory in the world today. It is also one of the most controversial. It clashes, or is widely thought to clash, with many conventional moral views, and with human rights when they are seen as inviolable. Would it, for example, be right to torture a suspected terrorist in order to prevent an attack that could kill and injure a large number of innocent people?

In this Very Short Introduction Katarzyna de Lazari-Radek and Peter Singer provide an authoritative account of the nature of utilitarianism, from its...

Marx is one of the most influential philosophers of all time, whose theories about society, economics, and politics have shaped and directed political and social thought for 150 years. In this new edition, Peter Singer discusses the legacy and impact of Marx's core theories, considering how they apply to twenty first century politics and society.