Through their pioneering theory and provocative built work, husband and wife duo Robert Venturi (born June 25, 1925) and Denise Scott Brown (born October 3, 1931) were at the forefront of the postmodern movement, leading the charge in one of the most significant shifts in architecture of the 20th century by publishing seminal books such as Complexity and Contradiction in Architecture (authored by Robert Venturi alone) and Learning from Las Vegas (co-authored by Venturi, Scott Brown and Steven Izenour).