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'.

Lord Beaverbrook was fundamentally a lonely man, with a low sense of his own self-worth, who was incapable of forming a stable, loving relationship with anyone. He could charm or he could bully; he could give or he could take; he was glad to see his guests arrive and pleased to see them go. Although many people genuinely loved him, he was incapable of believing that this was either possible or true. No wonder he was so restless, so impatient, so vindictive, so quick to lose his temper, so eager to stir things up.

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.

Prince Charles's concern for the underprivileged and disadvantaged has not exactly endeared him to the Conservative Central Office. As Norman Tebbit replied, it is not surprising that the Prince is so sympathetic towards the unemployed: he is by way of being one of them himself.

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.

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 those who reject it, the Victorian experience is something to feel embarrassed about, to apologise for, to escape from, and never to repeat. But to those who remain enthralled, it is a fabulous story of oustanding success and splendid achievement, by comparison with which Britain's 20th century records seems at best unimpressive, and often distinctly lacklustre.