In this collection of writings, Nobel laureate Friedrich A. Hayek discusses topics from moral philosophy and the methods of the social sciences to economic theory as different aspects of the same central issue: free markets versus socialist planned economies. First published in the 1930s and 40s, these essays continue to illuminate the problems faced by developing and formerly socialist countries. F. A. Hayek, recipient of the Medal of Freedom in 1991 and winner of the Nobel Memorial Prize in Economics in 1974, taught at the University of Chicago, the University of London, and the University of Freiburg. Among his other works published by the University of Chicago Press is The Road to Serfdom, now available in a special fiftieth anniversary edition.