This article explores the ways the emerging concept of humanism was circulated and defined in early nineteenth-century German-language press. By analyzing a digitized corpus of German-language newspapers and periodicals published between 1808 and 1850, this article looks into the ways the concept of humanism was employed in book reviews, news, political reports, and feuilleton texts. Newspapers and periodicals had a significant role in transmitting the concept of humanism from educational debates into general political language in the 1840s. Furthermore, in an era of growing social problems and political unrest, humanism became increasingly associated with moral sentiments. Accordingly, this article suggests that its new political meanings and emotional underpinnings made humanism culturally contagious, particularly immediately before and during the 1848/49 revolutions.