 Subsequently, Hook’s own views on economics underwent significant change. To a degree, this reflected his move from New York University, where he had been a professor of philosophy for four decades, to the Hoover Institution in California. At the Hoover Institution, Hook was closely involved with a number of the leading theoreticians of the economics of free-market societies. Although there was a shift in Hook’s approach to economic theory, the general change in his views on issues of political philosophy are not attributable to theoretical economics but to other social, political and cultural factors in the United States.