There are important arguments to be made about the relative merits of an hereditary or an elected head of state: but not at the level of the human frailties of particular monarchs or presidents. No one seriously contends that the American presidency should be abolished because Bill Clinton is a self-confessed adulterer. So why should the abolition of the British monarchy be contemplated because the same is true of Prince Charles?

For all her active goodness, Florence Nightingale herself was far from being the angelic figure of popular adulation: according to Lytton Strachey's Eminent Victorians she was a self-righteous, domineering amazon, who was ruthless in her compassion, merciless in her philantropy, destructive in friendships, obsessional in her list for power, and demonic in her saintliness.

More attention should have been given to the fundamental transformation which took place during Queen Victoria's reign, from ruling sovereign to constitutional monarch. Again, gender mattered. If Albert had lived, it seems clear that he would have resisted that development much more tenaciously, which the gradual emasculation (and feminization) of monarchy was probably more easily accomplished when a woman was on the throne.

Cruel and paradoxical though it undoubtedly is, the record shows that yje most succesful 20th century monarchs have been those who were not actually born to succeed. King George VI was 41 when the abdication of Edward VIII propelled him suddenly and unexpectedly to take up the crown; and Queen Elizabeth II spent her first decade with no inkling thay she herself might one day have to reign. Taken together, these examples suggest that the best preparation for the job of sovereign is not to be prepared for it at all, ir not to be too well prepared for it, or for too long.

Kitty Kelley's method, already perfected in her unauthorised and unflattering biographies of Frank Sinatra and Nancy Reagan, is to write bestsellers that take what she describes as an 'unblinking look' at their subjects - which might, of course, mean that her eyes are permanently open or permanently closed... the result is a work so bad that Britons cannot realise how fortunate they are in being unable to buy it. The great mistake with this book is not that it has been published in Britain, but that it has actually been published anywhere else.

Vernon Bogdanor's account The Monarchy and the Constitution is written as much in the shadow of Edmund Burke as it is of Walter Bagehot. He stresses the organic development of the British constitution, prefers evolution to revolution, and thinks stability is better than strife.

Of all the memorable phrases that have been minted and mobilised to describe modern British royalty, 'constitutional monarchy' is virtually the only one which seemes to have neither been anticipated nor invented by Walter Bagehot. It was he who insisted that 'a princely marriage is the brilliant edition of a universal fact, and as such it rivets mankind'; and he who warned that the monarchy's 'mystery is its life. We must not let in daylight upon magic'.