Bunch of know it alls

"Superficially, the world has become small and known. Poor little globe of earth, the tourists trot round you as easily as they trot round the Bois or round Central Park. There is no mystery left, we’ve been there, we’ve seen it, we know all about it. We’ve done the globe, and the globe is done.
"We’ve been everywhere and done everything, we know all about it. Yet the more we know, superficially,