George Burns says the love he receives from audiences is what keeps him going at age 93. Burns opens this week at Caesars Palace in Las Vegas and has a best-selling book, "Gracie: A Love Story." Gracie Allen, Burns' wife, was his partner from 1923 until her retirement in 1959. She died in 1964. Burns, puffing on his ever-present cigar, said he's still going strong "because of the love that comes over the footlights. That's what gives you the vitality." Burns, who has vowed to play the Palladium at age 100, has a long-term contract with Caesars. "Gracie" is the seventh book he's written. "Pretty good for a guy who's only read two," he said.