“Once in a lifetime, if one is lucky, one so merges with sunlight and air and running water that whole eons, the eons that mountains and deserts know, might pass in a single afternoon without discomfort....You have probably never experienced in yourself the meandering roots of a whole watershed or felt your outstretched fingers touching, by some clairvoyant extension, the brooks of snow-line glaciers at the same time you were flowing toward the Gulf over the eroded debris of worn-down mountains.”

“If one could run the story of that first human group like a speeded-up motion picture through a million years of time, one might see the stone in the hand change to the flint ax and the torch.”

“We have joined the caravan, you might say, at a certain point; we will travel as far as we can, but we cannot in a lifetime see all that we would like to see or learn all that we hunger to know.”

“Once, on ancient Earth, there was a human boy walking along a beach. There had just been a storm, and starfish had been scattered along the sands. The boy knew the fish would die, so he began to fling the fish to the sea. But every time he threw a starfish, another would wash ashore. "An old Earth man happened along and saw what the child was doing. He called out, 'Boy, what are you doing?' " 'Saving the starfish!' replied the boy. " 'But your attempts are useless, child! Every time you save one, another one returns, often the same one! You can't save them all, so why bother trying? Why does it matter, anyway?' called the old man. "The boy thought about this for a while, a starfish in his hand; he answered, "Well, it matters to this one." And then he flung the starfish into the welcoming sea.”

“Since the first human eye saw a leaf in Devonian sandstone and a puzzled finger reached to touch it, sadness has lain over the heart of man. By this tenuous thread of living protoplasm, stretching backward into time, we are linked forever to lost beaches whose sands have long since hardened into stone. The stars that caught our blind amphibian stare have shifted far or vanished in their courses, but still that naked, glistening thread winds onward. No one knows the secret of its beginning or its end. Its forms are phantoms. The thread alone is real; the thread is life.”

“And there was no longer a single race who bred blindly and without question. Time and its agonizing nostalgia would touch the heart each season, and be seen in the fall of a leaf, or, most terrible of all, a loved face would grow old. Cronos and the Fates had entered man's thinking, and try to escape as he might, he would endure an interior Ice Age. He would make, and then unmake fables. Then at last, and unwillingly, comprehend an intangible abstraction called space-time, and shiver inwardly at the endless abysses of space as he had once shivered, unclothed and unlighted before the Earthly frost.”

“A world like that is not really natural, or (the thought strikes one later) perhaps it really is, only more so. Parts of it are neither land nor sea and so everything is moving from one element to another, wearing uneasily the queer transitional bodies that life adopts in such places. Fish, some of them, come out and breathe air and sit about watching you. Plants take to eating insects, mammals go back to the water and grow elongate like fish, crabs climb trees. Nothing stays put where it began because everything is constantly climbing in, or climbing out, of its unstable environment.”