Chapter II
Man walks with his feet on the ground and his head in the air; and the history of what has happened on earth—the history of cities and armies and of all the things that have had body and form—is only one-half the Story of Mankind.
In every age, the external scenery in which the human drama has been framed has remained pretty much the same. There have been fluctuations in climate and changes in terrain; and at times a great civilization, like that of the Mayas in Central America, has arisen where now only a thick net of jungle remains; but the hills around Jerusalem are the hills that David saw; and during the historic period the drowning of a city in the Netherlands or the rise of a shifting bank of real estate along the coast of New Jersey is little more than the wearing off of the paint or a crack in the plaster. What we call the material world constantly changes, it goes without saying: mountains are stripped of trees and become wastes, deserts are plowed with water and become gardens. The main outlines, however, hold their own remarkably well; and we could have travelled better in Roman days with a modern map than with the best chart Ptolemy could have offered us.
If the world in which men live were the world as it is known to the physical geographer, we should have a pretty simple time of it.