This is how the chairman of a big advertising agency used to spend his spare time. "I hear a great deal of music. I am on friendly terms with John Barleycorn. I take long hot baths. I garden. I go into retreat among the Amish. I watch birds. I go for long walks in the country. And I take frequent vacations . . ."

Here is the unmistakeable voice of David Ogilvy, founder of Ogilvy & Mather and author of the line: "At 60 miles an hour, the loudest noise in the new Rolls-Royce comes from the electric clock." Ogilvy's description of how he kept alert is from Confessions of an Advertising Man, his 1962 classic about Madison Avenue, now reissued in the UK by Southbank Publishing.