Clive James has never been able to conceal his passion for air travel. Before he attained long trousers he could identify every aircraft that rattled the crockery in his house near Kingsford Smith aerodrome near Sydney, and he spent his adolescence making himself indispensible to the cleaners who swept out the planes. James' original two 'Postcards' to the Observer recorded his first return to Sydney after fifteen years in Europe. After that, Postcards...