杂集：《论自然》、演讲与讲座

tent of dropping clouds, this striped coat of climates, this fourfold year? Beasts, fire, water, stones, and corn serve him. The field is at once his floor, his work-yard, his play-ground, his garden, and his bed. “More servants wait on man Than he’ll take notice of.”---- Nature, in its ministry to man, is not only the material, but is also the process and the result. All the parts incessantly work into each other’s hands for the profit of man. The wind sows the seed; the sun evaporates the sea; the wind blows the vapor to the field; the ice, on the other side of the planet, condenses rain on this; the rain feeds the plant; the plant feeds the animal; and thus the endless circulations of the divine charity nourish man. The useful arts are reproductions or new combinations by the wit of man, of the same natural benefactors. He no longer waits for favoring gales, but by means of steam, he realizes the fable of Æolus’s bag, and carries the two and thirty winds in the boiler of his boat. To diminish friction, he paves the road with iron bars, and, mounting a coach with a ship-load of men, animals, and merchandise behind him, he darts through the country, from town to town, like an eagle or a swallow through the air. By the aggregate of these aids, how is the face of the world changed, from the era of Noah to that of Napoleon! The private poor man hath cities, ships, canals, bridges, built for him. He goes to the post-office, and the human race run on his errands; to the book-shop, and the human race read and write of all that happens, for him; to the court-house, and nations repair his wrongs. He sets his house upon the road, and the human race go forth every morning, and shovel out the snow, and cut a path for him. But there is no need of specifying particulars in this class of uses.…