“...if one had to think about every footstep one took, ordinary walking would be impossible.”

“And Stormgren hoped that when Karellen was free to walk once more on Earth, he would one day come to these northern forests, and stand beside the grave of the first man to be his friend.”

“In this universe the night was falling; the shadows were lengthening towards an east that would not know another dawn. But elsewhere the stars were still young and the light of morning lingered; and along the path he once had followed, Man would one day go again.”

“It was a pity that there was no radar to guide one across the trackless seas of life. Every man had to find his own way, steered by some secret compass of the soul. And sometimes, late or early, the compass lost its power and spun aimlessly on its bearings.Alan Bishop”

“Every revolutionary idea seems to evoke three stages of reaction. They may be summed up by the phrases: (1) It's completely impossible. (2) It's possible, but it's not worth doing. (3) I said it was a good idea all along.”

“He left the unspoken question hanging in the air. How did one annoy a two- kilometre-long black rectangular slab? And just what form would its disapproval take”

“. . . Moon-Watcher felt the first faint twinges of a new and potent emotion. It was a vague and diffuse sense of envy--of dissatisfaction with his life. He had no idea of its cause, still less of its cure; but discontent had come into his soul, and he had taken one small step toward humanity.”