Who famously stated, "God is in the details"?

The phrase "God is in the details" is famously attributed to Louis Sullivan, a pivotal figure in American architecture known for his contributions to the Chicago School of architecture and for being a mentor to Frank Lloyd Wright. Sullivan emphasized the importance of detailed design and ornamental work in architecture, arguing that the beauty and spirit of a building are revealed in the intricate aspects of its construction. His work celebrated craftsmanship and was integral in shaping modern architectural practices.

While the other architects mentioned, such as Mies van der Rohe, Frank Lloyd Wright, and Le Corbusier, also made significant contributions to architecture, they are not associated with this specific phrase. Mies van der Rohe is known for his minimalist approach and the adage "less is more," which underscores simplicity in design rather than a focus on detailed ornamentation.