Introduction by E.A. Burtt.-- Bibliography (p. xxiii-xxiv).-- Bacon, Francis. Leviathan.--Locke, John. An essay concerning human understanding. An essay concerning the true original, extent, and end of civil government.-- Berkeley, George. A treatise concerning the principles of human knowledge.-- Hume, David. An enquiry concerning human understanding. Dialogues concerning natural religion.-- Gay, John. Concerning the fundamental principle of virtue or morality.-- Bentham, Jeremy. An introduction to the principles of morals and legislation.-- Mill, James. Governement.-- Mill, J.S. Utilitarianism. On liberty