“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.”

“Paul Broca, for example, was a famous French craniologist in the nineteenth century whose name is given to Broca’s area, the part of the frontal lobe involved in the generation of speech (which is wiped out in many stroke victims). Among his other interests, Broca used to measure brains, and he was always rather perturbed by the fact that the German brains came out a hundred grams heavier than French brains. So he decided that other factors, such as overall body weight, should also be taken into account when measuring brain size: this explained the larger Germanic brains to his satisfaction. But for his prominent work on how men have larger brains than women, he didn’t make any such adjustments. Whether by accident or by design, it’s a kludge.”

“More of your conversation would infect my brain.”

“The only shame George Webber felt was that at one time in his life, for however short a period, he broke bread and sat at the same table with any man when the living warmth of friendship was not there; or that he ever traded upon the toil of his brain and the blood of his heart to get the body of a scented whore that might have been better got in a brothel for some greasy coins. This was the only shame he felt. And this shame was so great in him that he wondered if all his life thereafter would be long enough to wash out of his brain and blood the last pollution of its loathsome taint.”

“Slowly, very slowly, he sat up, and as he did so he felt more alive, and more aware of his own living body than ever before. Why had he never appreciated what a miracle he was, brain and nerve and bounding heart? It would all be gone...or at least, he would be gone from it. His breath came slow and deep, and his mouth and throat were completely dry, but so were his eyes.”

“Perhaps if the future existed, concretely and individually, as something that could be discerned by a better brain, the past would not be so seductive: its demands would be balanced by those of the future.”