Carl Sagan Quotes About Evolution

Quotes about: Evolution

• While our behavior is still significantly controlled by our genetic inheritance, we have, through our brains, a much richer opportunity to blaze new behavioral and cultural pathways on short timescales.

  Carl Sagan

  Science, Opportunity, Brain

  Carl Sagan (2012). “Dragons of Eden: Speculations on the Evolution of Human Intelligence”, p.3, Ballantine Books

• We are the product of 4.5 billion years of fortuitous, slow biological evolution. There is no reason to think that the evolutionary process has stopped. Man is a transitional animal. He is not the climax of creation.

  Carl Sagan

  Animal, Men, Thinking

  Carl Sagan (1973). “Carl Sagan's Cosmic Connection: An Extraterrestrial Perspective”, p.5, Cambridge University Press

• We are made of stellar ash. Our origin and evolution have been tied to distant cosmic events. The exploration of the cosmos is a voyage of self-discovery.

  Carl Sagan

  Discovery, Self, Events

  Carl Sagan (2011). “Cosmos”, p.348, Ballantine Books

• There are many other (besides testosterone) behaviour-eliciting hormones fundamental for humen well-being, including estrogen and progesterone in females. The fact that complex behavioural patterns can be triggered by a tiny concentration of moleculas coursing through the bloodstream, and that different animals of the same species generate different amounts of these hormones, is something worth thinking about when it's time to judge such matters as free will, individual responsibility, and law and order.

  Carl Sagan

  Responsibility, Thinking, Animal

• We on Earth have just awakened to the great oceans of space and time from which we have emerged. We are the legacy of 15 billion years of cosmic evolution. We have a choice: We can enhance life and come to know the universe that made us, or we can squander our 15 billion-year heritage in meaningless self-destruction. What happens in the first second of the next cosmic year depends on what we do, here and now, with our intelligence and our knowledge of the cosmos.

  Carl Sagan

  Ocean, Self, Years

  "Cosmos: A Personal Voyage". Documentary (1990 Update). Episode 1: "The Shores of the Cosmic Ocean", 1990.

• (When asked merely if they accept evolution, 45 percent of Americans say yes. The figure is 70 percent in China.) When the movie Jurassic Park was shown in Israel, it was condemned by some Orthodox rabbis because it accepted evolution and because it taught that dinosaurs lived a hundred million years ago-when, as is plainly stated at every Rosh Hashonhan and every Jewish wedding ceremony, the Universe is less than 6,000 years old.

  Carl Sagan

  Atheist, Israel, Years

  Carl Sagan (2011). “Demon-Haunted World: Science as a Candle in the Dark”, p.416, Ballantine Books

• The secrets of evolution are death and time-the deaths of enormous numbers of lifeforms that were imperfectly adapted to the environment; and time for a long succession of small mutations.

  Carl Sagan

  Science, Numbers, Long

  Carl Sagan (2011). “Cosmos”, p.49, Ballantine Books

• Our loyalties are to the species and the planet. We speak for Earth. Our obligation to survive is owed not just to ourselves but also to that Cosmos, ancient and vast, from which we spring.

  Carl Sagan

  Loyalty, Spring, Survival

  "Cosmos: A Personal Voyage". Book by Carl Sagan, 1980.

• We are at a crossroads in human history. Never before has there been a moment so simultaneously perilous and promising. We are the first species to have taken evolution into our own hands.

  Carl Sagan

  Taken, Hands, Firsts

  Carl Sagan (2011). “Broca's Brain: Reflections on the Romance of Science”, p.47, Ballantine Books

• We have begun to contemplate our origins: starstuff pondering the stars; organized assemblages of ten billion billion billion atoms considering the evolution of atoms; tracing the long journey by which, here at least, consciousness arose.

  Carl Sagan

  Stars, Journey, Long

  "Cosmos: A Personal Voyage". Book by Carl Sagan, 1980.

• We've begun at last to wonder about our origins, star stuff contemplating the stars, organized collections of ten billion billion billion atoms contemplating the evolution of matter, tracing that long path by which it arrived at consciousness here on the planet Earth and perhaps throughout the cosmos. Our obligation to survive and flourish is owed not just to ourselves but also to that cosmos, ancient and vast, from which we spring.

  Carl Sagan

  Stars, Spring, Long

• Thus the recent rapid evolution of human intelligence is not only the cause of but also the only conceivable solution to the many serious problems that beset us.

  Carl Sagan

  Causes, Serious, Evolution

  Carl Sagan (2012). “Dragons of Eden: Speculations on the Evolution of Human Intelligence”, p.4, Ballantine Books

• Because men, compared to male chimps, have such relatively small testicles (large testicles indicate a species where many males mate, one after the other, with the same female), we might guess that promiscuous societies were uncommon in the immediate human past.

  Carl Sagan

  Past, Men, Males

• The beauty of a living thing is not the atoms that go into it, but the way those atoms are put together. Information distilled over 4 billion years of biological evolution. Incidentally, all the organisms on the Earth are made essentially of that stuff. An eyedropper full of that liquid could be used to make a caterpillar or a petunia if only we knew how to put the components together.

  Carl Sagan

  Years, Together, Atoms

  "Cosmos: A Personal Voyage". Documentary (1990 Update). Episode 5: "Blues For a Red Planet", 1990.

• We are the first species to have taken our evolution into our own hands.

  Carl Sagan

  Taken, Hands, Firsts

  Carl Sagan (2011). “Broca's Brain: Reflections on the Romance of Science”, p.47, Ballantine Books

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