Family and early years Mosse was born in Berlin to a prominent, well-to-do German Jewish family. His mother Felicia (1888–1972) was the only daughter of the publisher and philanthropist
Rudolf Mosse, the son of a doctor imprisoned for revolutionary activity in 1848, and the founder of a publishing empire that included the leading, and liberal, newspapers the
Berliner Morgen-Zeitung and
Berliner Tageblatt. These were the most highly regarded and prestigious papers produced by the big three of Berlin publishing during the Weimar Republic,
Ullstein,
Scherl (taken over by
Hugenberg), and Mosse. A maternal uncle,
Albert Mosse, a constitutional scholar, had helped frame Japan's
Meiji Constitution. Mosse believed there was photograph from the year 1936 in which
Hermann Göring and the
Japanese Crown Prince (possibly confused by Mosse with the 1937 visit of
Prince Chichibu) stand before his uncle's grave in the Jewish cemetery in
Schönhauser Allee. Mosse's father
Hans Lachmann (1885–1944) (he adopted the double-barrel
Lachmann-Mosse following his marriage) was the grandson of a wealthy and religious Jewish
grain merchant. He rose to manage his father-in-law's media empire. In 1923 he commissioned the architect
Erich Mendelsohn to redesign the iconic
Mossehaus where the
Tageblatt was published (the building was restored in the 1990s). In his autobiography, Mosse described himself as a mischievous child given to pranks. He was educated at the noted
Mommsen-Gymnasium in Berlin and from 1928 onwards at
Schule Schloss Salem, a famously spartan boarding school that exposed the scions of rich and powerful families to a life devoid of privilege. The headmaster at Salem,
Kurt Hahn, was an advocate of
experiential education and required all pupils to engage in physically challenging outdoor activities. Although Mosse disliked the school's nationalistic ethos, he conceded that its emphasis on character building and leadership gave him "some backbone." He preferred individual sports, such as skiing, to team activities.
Emigration Mosse described his parents, who practiced
Reform Judaism and were anti-Zionist, as being, in their own minds, completely integrated as Germans ("
gänzlich eingedeutscht"). He suggested that they did not take seriously the threat posed by
Adolf Hitler and the
Nazis until henchmen of the new regime forced his father, at gunpoint, to sign over control of the publishing house. Mosse may have been speaking metaphorically: his father in April 1933 had left for Paris seeking refuge, not only from the Nazis but also from business creditors, who had had foreclosed on the publisher the previous autumn. Insolvency could not be avoided, and the regime seized the opportunity to force a transfer of ownership. In Paris, Lachmann-Mosse received an invitation from
Hermann Göring to return to the
Berliner Tageblatt as its business manager with the protective status of an
Honorary Aryan (
Ehrenarier); Mosse suspected that the motive was to wrest control of the network of foreign press agencies and offices that had remained in the family's possession. His father spurned the offer and never returned to Germany. With his wife and children in Switzerland, from Paris Lachmann-Mosse secured a divorce and married Karola Strauch (the mother of Harvard physicist Karl Strauch). In 1941 the couple moved to California where his father died, a celebrated patron of the arts, in 1944. From Switzerland, Mosse moved to England, where he enrolled at the
Quaker Bootham School in
York. It was here, according to his autobiography, that he first became aware of his homosexuality. A struggling student, he failed several exams, but with the financial support of his parents he was admitted to study history at
Downing College, Cambridge, in 1937. Here he first developed an interest in historical scholarship, attending lectures by
G. M. Trevelyan and
Helen Maude Cam. Unlike his second cousin (and fellow Cambridge history student)
Werner, however, Mosse's exam results remained mediocre: upon sitting Part I of the historical
tripos in 1939 he was awarded only a
lower second.
The United States In 1939, Mosse's family relocated to the United States, and he continued his undergraduate studies at the Quaker
Haverford College, earning a B.A. in 1941. He went on to graduate studies at
Harvard University, where he benefited from a scholarship reserved for students born in
Berlin-Charlottenburg. His 1946 PhD dissertation on English constitutional history of the 16th and 17th centuries, supervised by
Charles Howard McIlwain, was subsequently published as
The Struggle for Sovereignty in England (1950). With others of what he describes politically as the "
Spanish Civil War generation", Mosse was a member of the Socialist Club at Harvard. They were, he concedes, naive about the nature of the Soviet Union, seen first and foremost as the opponent of fascism, and the indispensable ally against Hitler. Mosse's first academic appointment as an historian was at the
University of Iowa, where he focused on religion in early modern Europe and published a concise study of the
Reformation that became a widely used textbook. Here he organized opposition to
McCarthyism and, in 1948, support for the
Progressive Party presidential campaign of
Henry A. Wallace. Despite being in the center of a conservative farm state, he experienced no personal repercussions. Against
Joseph McCarthy he found allies among conservative Republicans who regarded the red-baiting senator as a "disruptive radical". In 1955, Mosse moved to the
University of Wisconsin–Madison and began to lecture on modern history. His
The Culture of Western Europe: The Nineteenth and Twentieth Centuries, an Introduction (1961), which summarizes these lectures, was also widely adopted as a textbook. Mosse taught for more than thirty years at the University of Wisconsin, where he was named a John C. Bascom Professor of European History and a Weinstein-Bascom Professor of Jewish Studies, while concurrently holding the Koebner Professorship of History at
Hebrew University of Jerusalem. Beginning in 1969, Mosse spent one semester each year teaching at the Hebrew University. He also held appointments as a visiting professor at the
University of Tel Aviv and
LMU Munich. After retiring from the University of Wisconsin in 1989, he taught at Cambridge University and
Cornell University. He was named the first research historian in residence at the
U.S. Holocaust Memorial Museum. ==Scholarship==