How did Barthold Georg Niebuhr influence Leopold von Ranke?

Barthold Georg Niebuhr exerted a significant influence on Leopold von Ranke by pioneering the modern scientific historical method. While Ranke was working as a secondary school teacher, Niebuhr’s Römische Geschichte (History of Rome) served as a key inspiration for his transition toward a professional career in history.1

Niebuhr’s primary contribution to the field—and to Ranke’s development—was his rigorous approach to source criticism, which he termed tätige Skepsis or "constructive skepticism". This method involved analyzing the layers of historical sources, particularly those containing myth or poetry, to discard unreliable information and reconstruct factual history. By demonstrating how to critically evaluate classical texts, Niebuhr helped establish the foundation for the scientific historical scholarship that Ranke would later refine and institutionalize through his own influential seminars.23