Powerful Quotes - Page 230
Henry David Thoreau (1882). “Walden”, p.42
Calvin Colton, Henry Clay (1857). “The Life, Correspondence, and Speeches of Henry Clay: In Six Volumes”, p.51
Helen McCloy (1977). “The Impostor: A Novel of Suspense”, Dodd Mead
Heinz R. Pagels (1988). “The dreams of reason: the computer and the rise of the sciences of complexity”, Simon & Schuster
Harriet Martineau (1845). “Life in the Sick-room: Essays”, p.17
"Empire and Communications". Book by Harold Innis, pp. 19-20, 2007.