Fellowship Program of the U. S. Department of Education. Machan was selected as the 2003 President of the American Society for Value Inquiry, and delivered the presidential address on 29 December 2002, in Philadelphia, at the Eastern Division meetings of the American Philosophical Association, titled "Aristotle & Business." He was on the board of the Association for Private Enterprise Education for several terms. Machan was an adviser to Freedom Communications, Inc. on libertarian issues from 1996 to 2014. Machan wrote a memoir, The Man Without a Hobby: Adventures of a Gregarious Egoist (Hamilton Books, 2004; 2nd edition 2012). On 24 March 2016, he died at the age of 77. Academic work Machan's work usually focused on ethics and political philosophy, specifically natural rights theory, as in works such as Individuals and Their Rights (Open Court, 1989) and Libertarianism Defended (Ashgate, 2006). He defended the arguments of Ayn Rand for ethical egoism, and also wrote frequently on business ethics, a field in which he deployed a neo-Aristotelian ethical stance whereby commercial and business conduct gain their moral standing by constituting extensions of the virtues of productivity and prudence. He argued that the field presupposes the institution of the right to private property (one cannot trade what one does not own or hasn't been authorized to trade by the owner) in the works, The Business of Commerce, Examining an Honorable Profession, and A Primer on Business Ethics, both with James Chesher, and The Morality of Business, A Profession of Human Wealth Care (Springer, 2007). His full ethical position was developed in his book Classical Individualism: The Supreme Importance of Each Human Being (Routledge, 1998), and it is applied in, among other books, Generosity: Virtue in Civil Society (Cato Institute, 1998). Machan also wrote in the field of epistemology. His main focus was to challenge the conception of human knowledge whereby to know that P amounts to having reached a final, perfect, timeless, and finished understanding of P. Instead, Machan developed Ayn Rand's contextual conception of human knowledge (from Rand's Introduction to Objectivist Epistemology), but also draws on the insights of J. L. Austin, from his paper "Other Minds", and Gilbert Harman, from his book Thought, in works such as Objectivity (Ashgate, 2004). Machan worked on the problem of free will and defended a secular, naturalist (but not materialist) notion of human initiative in his books The Pseudo-Science of B. F. Skinner (1974;