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Carl Sagan: 730 quotes51 likes

“At any rate, both because of the clear trend in the recent history of biology and because there is not a shred of evidence to support it, I will not in these pages entertain any hypotheses on what used to be called the mind-body dualism, the idea that inhabiting the matter of the body is something made of quite different stuff, called mind.”

Introduction (p. 7)
The Dragons of Eden (1977)

“The entire recent history of biology shows that we are, to a remarkable degree, the results of the interactions of an extremely complex array of molecules; and the aspect of biology that was once considered its holy of holies, the nature of the genetic material, has now been fundamentally understood in terms of the chemistry of its constituent nucleic acids, DNA and RNA, and their operational agents, the proteins.”

Introduction (p. 7)
The Dragons of Eden (1977)

“I proffer the following ideas with a substantial degree of trepidation; I know very well that many of them are speculative and can be proved or disproved on the anvil of experiment.”

Introduction (p. 5)
The Dragons of Eden (1977)

“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)

“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)