Great quantities of air are indistinguishable from water- br The silver jet plows through the sky at 250 knots, br The air grumbling as it moves aside, an invisible sea br In which is left a delicate, frothing wake, br The ride no smoother than through standing waves br Or stillest ocean. br br Human beings are passengers on the biggest transit system of all, br The rounded globe, which spins beneath our feet at 1040 miles an hour- br Even as we believe daily we are on our way br To somewhere completely different.