"The notion of a retirement age is anathema to me. There should be a law against it. The calendar can't decide how alert or vigorous a person is. I felt good at 55 and I was up there being pestered about when I was going to retire."

Sir Alex Ferguson in his autobiography ,recounting questions he faced in 1996 ,10 years after being appointed Manchester United manager. He went on to manage the team for another 17 years, becoming one of the greatest managers of all time.