He is professor of political economy at the University of Manchester.
[1] He has published on subjects related to political economy and philosophy, philosophy and environmental policy, political theory, environmental ethics, and the philosophy of science.
[2][3] John O'Neill held the post of professor of philosophy at Lancaster University.
[1] Reviewing O'Neill's book The Market: Ethics, Knowledge and Politics, Mark Peacock wrote that "O'Neill defends an Aristotelian perfectionism which allows for a plurality of goods pursued for their own sake.
[...] The argument is sound, but does not answer the liberal objection to Aristotle that individuals must be allowed to pursue what they believe to be the good.