Paul Schmitthenner's book "Gebaute Form" is a grammar of construction design based on constructive and material principles. Even in the age of virtual design with CAD, it provides a necessary foundation: material for substance, connection for construction, and making a virtue out of seams are terms coined by Schmitthenner, the influential architecture teacher of the "Stuttgart School" after 1918. Paul Schmitthenner (1884-1972) was an architect of the New Tradition and a critic of the Weissenhof Estate (Ludwig Mies van der Rohe and others, 1927), yet modern enough to be significantly present in the discourses of the 1920s (settlement, social housing, rationalization). The improved and expanded new edition of the comprehensive monograph by the German Architecture Museum documents not only the buildings and projects but also Schmitthenner's role in the "Third Reich" and his text "Das sanfte Gesetz in der Baukunst," which was designed as a coded distancing.