“ After passing his final examinations in 1825, he spent a year in Switzerland, during part of the time acting as companion and secretary to C. von Bonstetten (1745–1832) ; the year 1827 was spent chiefly in Rome. Returning to Württemberg in 1828, he first undertook the duties of repetent or theological tutor in Tübingen, and afterwards accepted a curacy in Stuttgart; but having in 1830 received an appointment in the royal public library at Stuttgart, he thenceforth gave himself exclusively to literature and historical science. ”

“ Werth der Decretalen des falschen Isidorus, 1848) , on the primitive history of mankind (Urgeschichte des menschlichen Geschlechts, 1855) , on Hildebrand (Papst Gregorius VII. u. sein Zeitalter, 7 vols., 1859–1861) , on the history of the 18th century (Geschichte des 18ten Jahrhunderts, 1862–1873) , on German popular rights (Zur Geschichte deutscher Volksrechte im Mittelalter, Basel, 1865–1866) and on Byzantine history (Byzantinische Geschichten, 1872–1874) , are also of real value. ”