Robert Altman, one of the most adventurous and influential American directors of the late 20th century, a filmmaker whose iconoclastic career spanned more than half a century but whose stamp was felt most forcefully in one decade, the 1970s, died Monday in Los Angeles. He was 81.

So "Prairie Home" will be his last.

“The people who get into this business are fast-buck operators, carnival people, always have been,” Mr. Altman said in a 1993 interview. “They don’t try to make good movies now; they’re trying to make successful movies. The marketing people run it now. You don’t really see too many smart people running the studios, running the video companies. They’re all making big money, but they’re not looking for, they don’t have a vested interest in, the shelf life of a movie. There’s no overview. No one says, ‘Forty years from now, who’s going to want to see this?’ No visionaries.”

Robert Altman, Iconoclastic Director, Dies at 81