“A faith-healer may or may not start out with fraud in mind. But to his amazement, his patients actually seem to be improving. Their emotions are genuine, their gratitude heart-felt. When the healer is criticized, such people rush to his defence. Several elderly attendees of the channelling at the Sydney Opera House were incensed after the Sixty Minutes expose: ‘Never mind what they say,’ they told Alvarez, ‘we believe in you`. These successes may be enough to convince many charlatans, no matter how cynical they were at the beginning, that they actually have mystical powers. Maybe they’re not successful every time. The powers come and go, they tell themselves. They have to cover the down time. If they must cheat a little now and then, it serves a higher purpose, they tell themselves. Their spiel is consumer-tested. It works.”

“After hearing much from his patients about alleged faith-healing, a Minnesota physician named William Nolen spent a year and a half trying to track down the most striking cases. Was there clear medical evidence that the disease was really present before the ‘cure’? If so, had the disease actually disappeared after the cure, or did we just have the healer’s or the patient’s say-so? He uncovered many cases of fraud, including the first exposure in America of ‘psychic surgery’. But he found not one instance of cure of any serious organic (non-psychogenic) disease. There were no cases where gallstones or rheumatoid arthritis, say, were cured, much less cancer or cardiovascular disease. When a child’s spleen is ruptured, Nolen noted, perform a simple surgical operation and the child is completely better. But take that child to a faith-healer and she’s dead in a day.”

“One of the reasons for its success is that science has a built-in, error-correcting machinery at its very heart. Some may consider this an overbroad characterization, but to me every time we exercise self-criticism, every time we test our ideas against the outside world, we are doing science. When we are self-indulgent and uncritical, when we confuse hopes and facts, we slide into pseudoscience and superstition.”

“A deception arises, sometimes innocently but collaboratively, sometimes with cynical premeditation. Usually the victim is caught up in a powerful emotion - wonder, fear, greed, grief. Credulous acceptance of baloney can cost you money; that’s what P.T. Barnum meant when he said, “There’s a sucker born every minute’. But it can be much more dangerous than that, and when governments and societies lose the capacity for critical thinking, the results can be catastrophic, however sympathetic we may be to those who have bought the baloney.”

“When conventional medicine fails, when we must confront pain and death, of course we are open to other prospects for hope.And, after all, some illnesses are psychogenic. Many can be at least ameliorated by a positive cast of mind. Placebos are dummy drugs, often sugar pills. Drug companies routinely compare the effectiveness of their drugs against placebos given to patients with the same disease who had no way to tell the difference between the drug and the placebo. Placebos can be astonishingly effective, especially for colds, anxiety, depression, pain, and symptoms that are plausibly generated by the mind. Conceivably, endorphins -the small brain proteins with morphine-like effects - can be elicited by belief. A placebo works only if the patient believes it’s an effective medicine. Within strict limits, hope, it seems, can be transformed into biochemistry.”

“Cutting off fundamental, curiosity-driven science is like eating the seed corn. We may have a little more to eat next winter but what will we plant so we and our children will have enough to get through the winters to come?”

“Books, purchasable at low cost, permit us to interrogate the past with high accuracy; to tap the wisdom of our species; to understand the point of view of others, and not just those in power; to contemplate--with the best teachers--the insights, painfully extracted from Nature, of the greatest minds that ever were, drawn from the entire planet and from all of our history. They allow people long dead to talk inside our heads. Books can accompany us everywhere. Books are patient where we are slow to understand, allow us to go over the hard parts as many times as we wish, and are never critical of our lapses. Books are key to understanding the world and participating in a democratic society.”