Albert Kalthoff (5 March 1850, Barmen – 11 May 1906, Bremen) was a German Protestant theologian, who along with Emil Felden (1874–1959), Oscar Mauritz (1867–1959), Moritz Schwalb (1833–1916) and Friedrich Steudel (1866–1939) formed a group in Bremen, named the Deutscher Monistenbund (German Monists League), who no longer believed in Jesus as a historical figure. == Biography == Kalthoff criticized what he regarded as the romanticist and sentimental image of Jesus as a "great personality" of hi…