I suppose there has been nothing like the airports since the age of the stage-stops - nothing quite as lonely, as sombre-silent. The red-brick depots were built right into the towns they marked - people didn't get off at those isolated stations unless they lived there. But airports lead you way back in history like oases, like the stops on the great trade routes. The sight of air travellers strolling in ones and twos into midnight airports will draw a small crowd any night up or two. The young people look at the planes, the older ones look at the passengers with a watchful incredulity.