Germany, and Berlin in particular, was fertile ground for intellectuals, artists, and innovators from many fields during the Weimar Republic years. The social environment was chaotic, and politics were passionate. German university faculties became universally open to Jewish scholars in 1918. Leading Jewish intellectuals on university faculties included physicist Albert Einstein; sociologists Karl Mannheim, Erich Fromm, Theodor Adorno, Max Horkheimer, and Herbert Marcuse; philosophers Ernst Cassirer and Edmund Husserl; political theorists Arthur Rosenberg and Gustav Meyer; and many others. Nine German citizens were awarded Nobel Prizes during the Weimar Republic, five of whom were Jewish scientists, including two in medicine. Jewish intellectuals and creative professionals were among the prominent figures in many areas of Weimar culture.