Quotes from book
Broca's Brain

Broca's Brain
Carl Sagan

Broca's Brain: Reflections on the Romance of Science is a 1979 book by astrophysicist Carl Sagan. Its chapters were originally articles published between 1974 and 1979 in various magazines, including The Atlantic Monthly, The New Republic, Physics Today, Playboy and Scientific American. In the introduction, Sagan wrote:

Carl Sagan photo

“Our perceptions may be distorted by training and prejudice or merely because of the limitations of our sense organs, which, of course, perceive directly but a small fraction of the phenomena of the world. Even so straightforward a question as whether in the absence of friction a pound of lead falls faster than a gram of fluff was answered incorrectly by Aristotle and almost everyone else before the time of Galileo. Science is based on experiment, on a willingness to challenge old dogma, on an openness to see the universe as it really is. Accordingly, science sometimes requires courage—at the very least the courage to question the conventional wisdom.”

Carl Sagan book Broca's Brain

Source: Broca's Brain (1979), Chapter , “” (pp. 15-16)

Carl Sagan photo

“All inquiries carry with them some element of risk. There is no guarantee that the universe will conform to our predispositions. But I do not see how we can deal with the universe—both the outside and the inside universe—without studying it. The best way to avoid abuses is for the populace in general to be scientifically literate, to understand the implications of such investigations. In exchange for freedom of inquiry, scientists are obliged to explain their work. If science is considered a closed priesthood, too difficult and arcane for the average person to understand, the dangers of abuse are greater. But if science is a topic of general interest and concern—if both its delights and its social consequences are discussed regularly and competently in the schools, the press, and at the dinner table—we have greatly improved our prospects for learning how the world really is and for improving both it and us.”

Carl Sagan book Broca's Brain

Source: Broca's Brain (1979), Chapter 1, “Broca’s Brain” (pp. 13-14)

Carl Sagan photo

“Society corrupts the best of us. It is a little unfair, I think, to criticize a person for not sharing the enlightenment of a later epoch, but it is also profoundly saddening that such prejudices were so extremely pervasive. The question raises nagging uncertainties about which of the conventional truths of our own age will be considered unforgivable bigotry by the next.”

Carl Sagan book Broca's Brain

Source: Broca's Brain (1979), Chapter 1, “Broca’s Brain” (p. 11)

Carl Sagan photo

“The well-meaning contention that all ideas have equal merit seems to me little different from the disastrous contention that no ideas have any merit.”

Carl Sagan book Broca's Brain

Introduction (p. xii)
Broca's Brain (1979)

Carl Sagan photo

“Both borderline science and many religions are motivated in part by a serious concern about the nature of the universe and our role in it, and for this reason merit our consideration and regard. In addition, I think it possible that many religions involve at their cores an attempt to come to grips with profound mysteries of our individual life histories, as described in the last chapter. But both in borderline science and in organized religion there is much that is specious or dangerous. While the practitioners of such doctrines often wish there were no criticisms to which they are expected to reply, skeptical scrutiny is the means, in both science and religion, by which deep insights can be winnowed from deep nonsense.”

Carl Sagan book Broca's Brain

Introduction (p. xii)
Broca's Brain (1979)

Carl Sagan photo

“Whether we believe in God depends very much on what we mean by God.”

Carl Sagan book Broca's Brain

Source: Broca's Brain (1979), Chapter 23, “A Sunday Sermon” (p. 330)

Carl Sagan photo

“The best antidote for pseudoscience, I firmly believe, is science.”

Carl Sagan book Broca's Brain

Source: Broca's Brain (1979), Chapter 5, “Night Walkers and Mystery Mongers: Sense and Nonsense at the End of Science” (p. 75)