The publication of the definitive edition of Friedrich A. Hayek’s “Constitution of Liberty” coincides with the unexpected best-seller status of his earlier book “The Road to Serfdom” as a result of its promotion by the conservative talk-show host Glenn Beck. In an age when many on the right are worried that the Obama administration’s reform of health care is leading us toward socialism, Hayek’s warnings from the mid-20th century about society’s slide toward despotism, and his principled defense of a minimal state, have found strong political resonance.