Hollywood legend Paul Newman has let slip the secret to a long lasting marriage. The Oscar-winning actor, who has been married to second wife Joanne Woodward since 1958, says, "There's a lot of baloney I could talk about the secret of a long marriage. "In all honesty though, I don't have the faintest idea - apart form stating the obvious and saying it's important you keep each other laughing. "A sense of humour might be the most important thing of all."