"Leopold von Ranke is not only beyond all comparison the greatest historical scholar alive, but one of the very greatest historians that ever lived. Unrivalled stores of knowledge, depth of research, intimate acquaintance with the most recondite sources, have been, in his case, supplemented by everything which could be conferred by a long life, continuous study, close association with the great political actors and thinkers of the greatest part of the most eventful century of the world's history."