Famous quotes containing the words river and/or extension:
“It is impossible to step into the same river twice.”
—Heraclitus (c. 535–475 B.C.)
“The motive of science was the extension of man, on all sides, into Nature, till his hands should touch the stars, his eyes see through the earth, his ears understand the language of beast and bird, and the sense of the wind; and, through his sympathy, heaven and earth should talk with him. But that is not our science.”
—Ralph Waldo Emerson (1803–1882)