This volume takes a reflective position with respect to the conference series "Foundations of the Formal Sciences" (FotFS) and asks: * What are the Formal Sciences? * Can we develop a theoretical classification of the sciences that juxtaposes the formal sciences to the natural sciences, social sciences, and humanities? Can we do this solely by identifying common methodological features? * Can we identify changes of the notion of formal sciences over time? How were the areas that we now conceived as the "Foundations of the Formal Sciences" classified throughout history? Investigating the "History of the Concept of the Formal Sciences" to find answers to an array of questions with this wide scope, you need an enthusiastic group of researchers interested in going beyond the traditional boundaries of their subjects covering at once the philosophical, historical and logical issues at hand, like the authors of this volume. The papers in this volume stand witness to our success in touching the mentioned questions. It will be of interest to philosophers, sociologists, historians, and logicians, and covers many aspects of the history of the formal sciences from the Bronze Age to the early XXIst century.