Edward Bellamy,
Equality — Chapter X. A midnight plunge
(1897)
“ You look incredulous, but let me tell you now, as a first step toward the understanding of modern conditions, that power, with all its applications of light, heat, and energy, is to-day practically exhaustless and costless, and scarcely enters as an element into mechanical calculation. The uses of the tides, winds, and waterfalls are indeed but crude methods of drawing on Nature's resources of strength compared with others that are employed by which boundless power is developed from natural inequalities of temperature. ”
