"Pessimism of the Intellect, Optimism of the Will: The Political Philosophy of Kai Nielsen", Edited by David Rondel and Alex Sager, 2012, ISBN 978-1-55238-530-2 Wittgensteinian Fideism?, 2006, ISBN 0-334-04005-1 Atheism And Philosophy, 2005, ISBN 1-59102-298-3 Globalization And Justice, 2002, ISBN 1-59102-054-9 Naturalism and Religion, 2001, ISBN 1-57392-853-4 Exploitation, 2001, ISBN 0-391-04000-6 Why Be Moral?, 1997, ISBN 0-87975-519-9 Naturalism Without Foundations, 1996, ISBN 1-57392-076-2 On Transforming Philosophy: A Metaphilosophical Inquiry, 1995, ISBN 0-8133-0666-3 God and the Grounding Of Morality, 1991, ISBN 0-7766-0328-0 After the Demise of the Tradition: Rorty, Critical Theory, and the Fate of Philosophy, 1991, ISBN 0-8133-8044-8 Ethics without God, 1990, ISBN 0-87975-552-0 God, Skepticism and Modernity, 1989, ISBN 0-7766-0241-1 Marxism and the Moral Point of View: Morality, Ideology, and Historical Materialism, 1989, ISBN 0-8133-0653-1 Equality and Liberty: A Defense of Radical Egalitarianism, 1986, ISBN 0-8476-7516-5 Philosophy and Atheism, 1985, ISBN 0-87975-289-0 An Introduction to the Philosophy of Religion, 1983, ISBN 0-312-43310-7 Marx and Morality, 1981, ISBN 0-919491-01-4 Scepticism, 1973, ISBN 0-333-10263-0 Reason and Practice: A Modern Introduction to Philosophy, 1971, ISBN 0-06-044836-9 Contemporary Critiques of Religion, 1971, ISBN 0-333-06963-3 Ethics Without God, 1971, ISBN 0-301-73021-0