He wrote a large work on the Christian doctrine of justification and atonement, Die Christliche Lehre von der Rechtfertigung and Versohnung, published during the years 1870-74, and in 1880-86 a history of pietism (Die Geschichte des Pietismus).
Marguerite herself, however, was protected by her brother, and her personal inclinations seem to have been rather towards a mystical pietism than towards dogmatic Protestant sentiments.
Baumgarten (1706-1757), the link between the old Pietism and J.
Spener, "the father of pietism," he became tutor in Quedlinburg.
The majority of the inhabitants are Protestant, with a strong tendency towards Pietism; but the Roman Catholics number upwards of 40,000, forming about one-fourth of the total population.