The volume is both a restatement and extension of the major contributions of Ludwig von Mises to epistemology, history, economics, and political philosophy. The new and original contributions to this book review topics of importance to the Austrian school of economic thought, including positivism and public choice, socialism, methodology, and the philosophy of history. Finally, the contributors to this volume represent the best scholarship across the spectrum of Austrian economic thought, including Hans-Herman Hoppe, Israel Kirzner, Murray Rothbard, and Leland B. Yeager.