“So should we ban or restrict synthetic chemicals until we have a full understanding of their effects? This attractively simple idea is a lot more complicated than it appears. If pesticides were banned, agricultural yields would decline, fruits and vegetables would get more expensive and people would buy and eat fewer of them. But cancer scientists believe that fruits and vegetables can reduce the risk of cancer if we eat enough of them, which most people do not do even now. And so banning pesticides in order to reduce exposure to carcinogens could potentially result in more people getting cancer.”

“There are scores of studies demonstrating that a diet rich in vegetables and fruits reduces the risk of dying from all the Western diseases; in countries where people eat a pound or more of vegetables and fruits a day, the rate of cancer is half what is in the United States.”

“More health tips: Eat lots of fruits and vegetables. Get plenty of rest. And learn to duck.”

“When they began, they could not have thought that it would end like this, because their time seemed to them as simple as a flame. We know now that it was a very complicated time and that they were more complicated people than they knew.”

“Even now, it's still hard for him to say it. I don't blame him. It's an icky word. Why couldn't whoever was in charge of naming things call cancer 'sugar' and sugar, 'cancer'? People might not eat so much of the stuff then. And it's so much more pleasant to die of sugar.”

“Even more alarming were persistent rumors that someone had smuggled an Emotion Amplifier on board 'Mentor'. The so-called joy machines were banned on all planets, except under strict medical control; but there would always be people to whom reality was not good enough, and who would want to try something better.”