“Vanderbilt University scientists had discovered chemically testable differences between psychopaths and others. One was the variance in levels of dopamine, a naturally produced chemical that contributed to a person’s motivation and pleasure. Those scientists concluded that the elevated level of dopamine was not an additional symptom to the personality abnormalities already known, but rather responsible for the personality changes.”

“Murderers with severe personality disorders, police had learned, sometimes could fool a lie detector because they lacked shame and guilt, and didn’t feel the normal stress when lying.”

“I asked the feedlot manager why they didn't just spray the liquefied manure on neighboring farms. The farmers don't want it, he explained. The nitrogen and phosphorus levels are so high that spraying the crops would kill them. He didn't say that feedlot wastes also contain heavy metals and hormone residues, persistent chemicals that end up in waterways downstream, where scientists have found fish and amphibians exhibiting abnormal sex characteristics.”

“In the past, pure scientists took a snobbish view of business. They saw the pursuit of money as intellectually uninteresting, suited only to shopkeepers. And to do research for industry, even at the prestigious Bell or IBM labs, was only for those who couldn't get a university appointment. Thus the attitude of pure scientists was fundamentally critical toward the work of applied scientists, and to industry in general. Their long-standing antagonism kept university scientists free of contaminating industry ties, and whenever debate arose about technological matters, disinterested scientists were available to discuss the issues at the highest levels.”

“It's something of a sacrilege nowadays to speak of insanity as anything but the chemical brain disease that on one level it is. But there were moments with my daughter when I had the distressed sense of being in the presence of a rare force of nature, such as a great blizzard or flood: destructive, but in its way astounding too. (4)”

“When the eyes of a woman that a man finds attractive look directly at him, his brain secretes the pleasure-inducing chemical dopamine - but not when she looks elsewhere.”

“Each happy chemical triggers a different good feeling. Dopamine produces the joy of finding what you seek– the “Eureka! I got it!” feeling. Endorphin produces the oblivion that masks pain– often called “euphoria.” Oxytocin produces the feeling of being safe with others– now called “bonding.” And serotonin produces the feeling of being respected by others–“pride.”