"The Soul of the German Historical School" is a comprehensive collection of essays that focus on the significant thinkers Gustav von Schmoller, Max Weber, and Joseph Alois Schumpeter. These three figures are connected to the German Historical School of economics in different ways, which thrived in the German-speaking world during the 19th century. The essays provide an in-depth analysis of the heterodox approaches of this school and illuminate the complex interconnections between the ideas and theories of the mentioned economists. The author, Yuichi Shionoya, examines the development and influence of the German Historical School and highlights Schmoller's central role as a leading figure of this movement. This collection is of interest not only to students and professionals in economics but also to anyone interested in the history of economic thought.