Text in German. Carl Menger's "Principles of Economics" appear in 1871 and mark the birth of the Austrian School of Economics. 150 years later, more people in more countries know the Austrian School than ever before. Carl Menger, Ludwig Mises and Friedrich Hayek are demonized or worshiped like pop stars. Their heads adorn posters and t-shirts all over the world. However, the roots of today's Neo-Austrian School lie in Vienna, where between 1871 and 1934 science, philosophy, art and coffee house culture inspire each other to achieve top performance. This book deals with these interdisciplinary and diverse Viennese origins and their global consequences. As a footnote to the glorious Viennese late Enlightenment, may it impart knowledge, create ideas, stimulate reflection and tolerant-critical discussion - and hopefully also entertain a little!