"Walking was not fast enough, so we ran. Running was not fast enough, so we galloped. Galloping was not fast enough, so we sailed. Sailing was not fast enough, so we rolled merrily along on long metal tracks. Long metal tracks were not fast enough, so we drove. Driving was not fast enough, so we flew. Flying isn't fast enough for us. We want to get there faster. Get where? Wherever we are not. But a human soul can only go as fast as a man can walk, they used to say. In that case, where are all the souls? Left behind."