Do not rely too much on isolation.... Oceans are not as wide as they used to be.
(Howard Koch (1901-1995), U.S. screenwriter. Michael Curtiz. Litvinov (Oscar Homolka), Mission to Moscow, speaking of American isolationism (1943).
Although in reality highly fictionalized, the film purports to be based on Ambassador Joseph E. Davies memoirs of the same title. Davies himself introduces the film in a prologue.)
What angels invented these splendid ornaments, these rich conveniences, this ocean of air above, this ocean of water beneath, this firmament of earth between? this zodiac of lights, this tent of dropping clouds, this striped coat of climates, this fourfold year?
(Ralph Waldo Emerson (1803-1882), U.S. essayist, poet, philosopher. Nature, ch. 2 (1836, revised and repr. 1849).)