Osama bin Laden, the Saudi-born revolutionary who is believed by most Arab and Iranian observers to be the inspiration of the attacks in New York and Washington, is the best known of the Islamic militants to have emerged in the past 20 years and the least difficult to fathom.

The world survived the fall of the Roman empire and will no doubt outlast our own so much more splendid civilisation.

Bulls don't read. Bears read financial history. As markets fall to bits, the bears dust off the Dutch tulip mania of 1637, the Banque Royale of 1719-20, the railway speculation of the 1840s, the great crash of 1929.

We read too much Shakespeare at school, and view our parliamentary politics as dynastic drama, in which an impatient crown prince frets at his long subordination and begins to scheme for the throne he knows he merits, was promised and has earned.

In rising financial markets, the world is forever new. The bull or optimist has no eyes for past or present, but only for the future, where streams of revenue play in his imagination.

It is time to end the western policy of malign neglect. It is in the interest of the whole world to help tackle the actual grievances in Palestine, Kashmir, and in central and southern Iraq, and to help the region out of its economic backwardness.

Almost all novels are improved by cutting from the top. On their first pages, authors parade those favourite effects which disgust the impartial reader.