The group volume distinguishes itself by its multidisciplinary, comparative approach and by the network of relationships it weaves between the various European languages and cultures. The study takes shape from its different viewpoints and in its diverse contexts, to chart a detailed historical-conceptual map of the basic role theater played in forging the modern European consciousness. The thematic core of ‘theatermania’ lay in the authentic theatrical passion that manifested itself in different ways from one country to another throughout the 18th century. While the aesthetic, social and political value of theater took a variety of forms, its central feature was the privileged place it gave to collective and individual social revolutions, phenomena that could be defined as upheavals of the collective imagination, which found in theater a source of nourishment, mediation or control. The volume offers not just a series of historical-theatrical studies, but a view of history that foregrounds the passions that were regularly sparked by theater. It adds an essential feature to the profile of the century that redefined the role and importance of theater, and that led to its full re-evaluation in the Romantic age.