Epic theatre is a theatre movement arising in the early to mi-20th century, inextricably linked to the German playwright Bertolt Brecht. Though many of the concepts involved in epic theatre had been around for years, even centuries, Brecht unified them, developed the style, and popularised it. It is sometimes referred to as Brechtian acting, although its principles apply equally to the writing and production of plays. "Its qualities of clear description and reporting and its use of choruses and projections as a means of commentary earned it the name 'epic'." Brecht later favoured the term dialectical theatre, to emphasize the element of argument and discussion.