 After the acceptance of his dissertation Marcuse returned to Berlin where “his father provided him with an apartment and a share in a publishing and antiquarian book business” (Wiggershaus 1994: 96). Marcuse worked mainly as a catalogue researcher and bibliographer, and published a Schiller bibliography in 1925 (Kellner 1984: 32–33). In 1924 Marcuse married his first wife, Sophie.