THE CONSTITUTION OF LIBERTY BY F. A. HAYEK S IXTEEN YEARS AGO, in a short but very important book, The Road to Serfdom, F. A. Hayek sought a modem restatement of the great issue between liberty and authority. Now, pushing his researches further, he has produced a monumental work of 570 pages, The Consti tution of Liberty (University of Chicago Press. $7.50), ex ploring the philosophical foundations of freedom with a thoroughness, scholarship, rigor of reasoning, and precis...