PHILADELPHIA (AP) — Architect Robert Venturi, who rejected austere modern design and instead ushered in postmodern complexity with the dictum “Less is a bore,” has died. He was 93.

His family released a statement on his firm’s website saying Venturi died at home in Philadelphia on Tuesday after a brief illness, surrounded by his wife, the architect Denise Scott Brown, and son, James Venturi.

He remained active well into his 80s at Venturi, Scott Brown & Associates, the architectural firm he founded in the 1960s. It’s now known as VSBA Architects + Planners.

“All of us at VSBA are heartbroken. Viva Bob,” the firm said in a statement.

Unlike the spare aesthetic of modernists like Mies van der Rohe, Venturi’s work celebrated complexity and even inconsistency in design. He encouraged architects and consumers to enjoy “messy vitality” in architecture — whether whimsical, sarcastic, humorous or honky-tonk.

Often referred to as the father of postmodernism, Venturi shunned the title, calling it “an easy catch phrase … the equivalent of a political sound bite.”

In 1991, Venturi was awarded the Pritzker Prize, architecture’s equivalent of the Nobel Prize, for “expanding and redefining the limits of architecture in this century, as perhaps no other has.”