… is from page xv of the 1994 Random House edition of Barbara Tuchman’s 1966 book, The Proud Tower:
Man had entered the Nineteenth Century using only his own and animal power, supplemented by that of wind and water, much as he had entered the Thirteenth, or, for that matter, the First. He entered the Twentieth with his capacities in transportation, communication, production, manufacture and weaponry multiplied a thousandfold by the energy of machines.