The Breath of Life by John Burroughs — Read

When the man of science seeks to understand and explain the world in which we live, he guards himself against seeing double, or seeing two worlds instead of one, as our unscientific fathers did -- an immaterial or spiritual world surrounding and interpenetrating the physical world, or the supernatural enveloping and directing the natural. He sees but one world, and that a world complete in itself; surrounded, it is true, by invisible forces, and holding immeasured and immeasurable potencies; a vastly more complex and wonderful world than our fathers ever dreamed of; a fruit, as it were, of the great sidereal tree, bound by natal bonds to myriads of other worlds, of one stuff with them, ahead or behind them in its ripening, but still complete in itself, needing no miracle to explain it, no spirits or demons to account for its processes, not even its vital processes.

In the light of what he knows of the past history of the earth, the man of science sees with his mind's eye the successive changes that have taken place in it; he sees the globe a mass of incandescent matter rolling through space; he sees the crust cooling and hardening; he sees the waters appear, the air and the soil appear, he sees the clouds begin to form and the rain to fall, he sees living things appear in the waters, then upon the land, and in the air; he sees the two forms of life arise, the vegetable and the animal, the latter standing upon the former; he sees more and more complex forms of both vegetable and animal arise and cover the earth. They all appear in the course of the geologic ages on the surface of the earth; they arise out of it; they are a part of it; they come naturally; no hand reaches down from heaven and places them there; they are not an addendum; they are not a sudden creation; they are an evolution; they were potential in the earth before they arose out of it. The earth ripened, her crust mellowed, and thickened, her airs softened and cleared, her waters were purified, and in due time her finer fruits were evolved, and, last of all, man arose. It was all one process. There was no miracle, no first day of creation; all were days of creation. Brooded by the sun, the earth hatched her offspring; the promise and the potency of all terrestrial life was in the earth herself; her womb was fertile from the first. All that we call the spiritual, the divine, the celestial, were hers, because man is hers.