“In his blackest hours, Stone doubted the utility of all thought, and all intelligence. There were times he envied the laboratory rats he worked with; their brains were so simple. Certainly, they did not have the intelligence to destroy themselves; that was a peculiar invention of man.”

“Already, the brain consumed more than a quarter of the body's blood supply... an organ accounting for only a small percentage of body mass. If brains grew larger, and better, then perhaps they would consume more - perhaps so much that, like an infection, they would overrun their hosts and kill the bodies that transported them. Or perhaps, in their infinite cleverness, they would find a way to destroy themselves and each other. There were times when, as he [Stone] sat at State Department or Defense Department meetings, and looked around the table, he would see nothing more than a dozen gray, convoluted brains sitting on the table... Just brains, sitting around, trying to decide how to outwit other brains, at other conference tables.Idiotic.”

“People were so naive about plants, Ellie thought. They just chose plants for appearance, as they would choose a picture for the wall. It never occurred to them that plants were actually living things, busily performing all the living functions of respiration, ingestion, excretion, reproduction---and defense.”

“They don't have intelligence. They have what I call 'thintelligence.' They see the immediate situation. They think narrowly and they call it 'being focused.' They don't see the surround. They don't see the consequences.”

“Sitting in the deserted law offices, Sanders had the feeling that he was all alone in the world, with nobody but Fernandez and the encoraching darkness. Things were happening quickly; this person he had never met before today was fast becoming a kind of lifeline for him.”

“... we have created a man with not one brain but two. ... This new brain is intended to control the biological brain. ... The patient's biological brain is the peripheral terminal -- the only peripheral terminal -- for the new computer. ... And therefore the patient's biological brain, indeed his whole body, has become a terminal for the new computer. We have created a man who is one single, large, complex computer terminal. The patient is a read-out device for the new computer, and is helpless to control the readout as a TV screen is helpless to control the information presented on it.”

“A man can see by starlight, if he takes the time.”