Travel will give you a knowledge of other countries, it will show you mountains whose outlines are quite new to you, stretches of unfamiliar plains, valleys watered by perennial streams; it will allow you to observe the unique features of this or that river, the way in which, for example, the Nile rises in summer flood, or the Tigris vanishes from sight and at the completion of its journey through hidden subterranean regions is restored to view with its volume undiminished, or the way the Meander, theme of every poet’s early training exercises, winds about, loop after loop, and again and again
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