Book Reviews: (1) János Kornai: A gondolat erejével: Rendhagyó önéletrajz(By Force of Thought: Irregular Memoirs). Budapest: Osiris, 2005, 426 pp. (Reviewed by Katalin Szabó); (2) William J. Baumol: The Free Market Innovation Machine - Analyzing the Growth Miracle of Capitalism. Princeton University Press, 2002, 318 pp. (Reviewed by Jan Kettnaker)