Some primary source texts for ethical theory and political philosophy

• Utilitarianism (Mill)
• Deontology (Kant)
• Natural Law Theory (Maritain)
  
• Virtue Ethics (Aristotle)
• Bernard Mandeville (1670 - 1733) (on egoism) "The Fable of the Bees; or, Private Vices, Publick Benefits (1714)" and "The Grumbling Hive: or, Knaves Turn'd Honest (1705)."
• Edward Westermarck, Ethical Relativity (1932).