"The safety gap is so large, in fact, that planes would still be safer than cars even if the threat of terrorism were unimaginably worse than it actually is: An American professor calculated that even if terrorists were hijacking and crashing one passenger jet a week in the United States, a person who took one flight a month for a year would have only a 1-in-135,000 chance of being killed in a hijacking--a trivial risk compared to the annual 1-in-6,000 odds of being killed in a car crash."
— Daniel Gardner (The Science of Fear: Why We Fear the Things We Shouldn't--and Put Ourselves in Greater Danger)

"Put all these numbers together and what do they add up to? In a sentence: We are the healthiest, wealthiest, and longest-lived people in history. And we are increasingly afraid. This is one of the great paradoxes of our time."
— Daniel Gardner (The Science of Fear: Why We Fear the Things We Shouldn't--and Put Ourselves in Greater Danger)

"The rather uncomfortable feeling most of us have when we're around snakes is evidence of how this ancient experience continues to influence us today. Throughout the long prehistory of our species and those that preceded it, snakes were a mortal threat. And so we learned our lesson. Others didn't, but that had a nasty habit of dying. So natural selection did its work and the rule--beware of snakes--was ultimately hardwired into every human brain. It's universal. Go anywhere on the planet, examine any culture. People are wary of snakes. Even if--as in the Arctic--there are no snakes. Our primate cousins shared our long experience and they feel the same way: Even monkeys raised in laboratories who have never seen a snake will back away at the sight of one."
— Daniel Gardner (The Science of Fear: Why We Fear the Things We Shouldn't--and Put Ourselves in Greater Danger)