"What I call natural philosophy isn’t new, for it has been practiced in various ways by such distinguished philosophers as Thales, Aristotle, Epicurus, Lucretius, Bacon, Locke, Hume, Mill, Peirce, Russell (after 1920), Dewey, Quine (after 1950), and Kuhn. There are also many contemporary philosophers making progress on problems concerning the nature of knowledge, reality and ethics, without succumbing to the dogmas of analytic philosophy. Philosophy needs to be extraverted, directing its attention to real world problems and relevant scientific findings, not introverted and concerned only with its own history and techniques."