Goodreads helps you keep track of books you want to read.
Start by marking “O mundo assombrado pelos demônios” as Want to Read:
O mundo assombrado pelos demônios
Enlarge cover
Rate this book
Clear rating
Open Preview

O mundo assombrado pelos demônios

4.26  ·  Rating details ·  64,163 ratings  ·  3,035 reviews
Assombrado com a escuridão que parece tomar conta do mundo, onde explicações pseudocientíficas e místicas ocupam cada vez mais os espaços dos meios de comunicação, Carl Sagan acende a vela do conhecimento científico para tentar iluminar os dias de hoje e recuperar os valores da racionalidade. Como todos os livros do autor, O mundo assombrado pelos demônios está cheio de in ...more
512 pages
Published 1995 by Companhia de Bolso
More Details... Edit Details

Friend Reviews

To see what your friends thought of this book, please sign up.

Reader Q&A

To ask other readers questions about O mundo assombrado pelos demônios, please sign up.
Popular Answered Questions
Michael your use of "mocking" tells the world more about you and less about Sagan. "Demon Haunted world" is an essay. "Contact," is a novel.…moreyour use of "mocking" tells the world more about you and less about Sagan. "Demon Haunted world" is an essay. "Contact," is a novel.(less)
David He neither mocks nor sets up straw men. He responds to real criticisms with logical answers. He never said not to look for Big Foot. This isn't a book…moreHe neither mocks nor sets up straw men. He responds to real criticisms with logical answers. He never said not to look for Big Foot. This isn't a book to bring your feelings of attachment to unsubstantiated claims. (less)

Community Reviews

Showing 1-30
Average rating 4.26  · 
Rating details
 ·  64,163 ratings  ·  3,035 reviews

More filters
Sort order
Start your review of O mundo assombrado pelos demônios
Jan 26, 2008 rated it it was amazing  ·  review of another edition
I sit before my computer, typing out a review of what is my favorite book. I’m daunted by the magnitude of this task, having just finished the book for the fourth or maybe fifth time. I wish I could remember when I bought this book, likely close to a decade ago, but I’m sure that I must have been awestruck to discover a book written by a man who has influenced my life and my interests to such a great extent.

One of the great memories of my early life was that of waiting to plop down in front of t
Kevin Kelsey
Always insightful, it seems that Sagan just wanted to watch the world learn. I should've read this at 14. Honestly, this should probably be required high school reading for everyone. It illustrates clearly the many and varied personal and societal benefits gained from applying the methods of science to every corner of our thinking. The methods are the important part, the findings are just icing on the cake. It covers the dangers of unchecked ideologies and the requirement for both objectivity an ...more
Sep 19, 2008 rated it really liked it  ·  review of another edition
Shelves: society, science
I miss Carl Sagan.

Ever since I was a kid, Carl Sagan has been the face of science for me. I would watch Cosmos and feel a sense of amazement that the universe was as wonderful as it was. He'd be there in his turtleneck and his blazer, smiling as though he'd just heard the coolest secret and he wanted to share it with you. And he did, except that it wasn't his secret. Hell, it wasn't a secret at all - it was the combined results of thousands of years of thoughts, deductions, mistakes, missteps, e
Mar 03, 2020 rated it it was amazing  ·  review of another edition
Shelves: formative
Helluva book, comrades. The book which did more grunt work than any other to transform me from a soft headed, uncritical thinker, into a savage, evidence seeking, joy murdering empiricist. So I’m going to avoid sullying it with the vulgarity which has come to define my common rhetorical flourishes. There will be no meandering. Understand? No digressions. I will not stoop so low as to flank grammarian inquisitors with rapid fire similes in order to escape their censure. I will definitely not flee ...more
Hey, so, guess what? People who read the Weekly World News are stupid, but scientists are awesome! Did you know that?

I just put this book down, 175 pages in. It's not that I disagree with the thesis, because I actually don't at all. Sagan uses the widespread belief in alien abductions to talk about the need for more critical thinking in this world. And I'm totally there -- yes, for the love of God, teach people to distinguish between fact and what they want to be fact. But Sagan goes on -- and o
Orhan Pelinkovic
The Demon-Haunted World is the 4th Carl Sagan (1934-1996) book that I've read. There is no doubt this astronomer can write. Sagan with this book has shifted from his usual topic of astronomy and astrophysics to lecturing the reader against pseudoscience, superstition, and some theological teachings.

Sagan successfully debunks the pseudoscience beliefs, such as ufology, with well presented arguments (sometimes over-elaborated) as these observers or believers never demonstrate clear evidence for th
May 03, 2014 rated it it was amazing  ·  review of another edition
Shelves: science
This is a marvelous book about the consequences of a population being scientifically illiterate. There are numerous consequences, all of them bad. Most notably, the growth of superstitious beliefs can lead to terrifying witch hunts that grow and grow, leaving a broad trail of torture, execution, mass hysteria and paranoia. Interestingly, Carl Sagan holds up science and democracy as mutually supporting concepts. He cites Frederick Douglass, Benjamin Franklin, and Thomas Jefferson as examples of l ...more
Sagan has been a hero of mine since I saw Cosmos years and years ago. Now that was one of the truly great science documentaries and one that, on the subject of physics, has rarely been bettered.

This is a supurb book. Many people say things like, "I've no idea how people without a belief in the supernatural can bare to live in this world". Well, Sagan gives a powerful answer here.

Sagan understood the infinite joy that comes from understanding something about the world - something that is real. H
May 02, 2018 rated it it was amazing  ·  review of another edition
Shelves: non-fiction
This is a wonderful, important and scary book that has not aged much at all. I was made aware of its existence in a rather unconventional way: through a video game called The Witness.

In The Witness, you explore an unreal and mysterious island, solving maze puzzles that gets more and more complex as you go along. Scattered around the island you'll find audio logs containing quotes on science and religions from around the world and across time, and these sometimes gives you abstract hints on how
Dec 10, 2008 rated it did not like it  ·  review of another edition
Recommends it for: The choir that he is already preaching to
Full disclosure here, I did not finish this book; I made the decision to stop reading it after around 100 pages. I kept expecting the science to start at any page, but I got tired of reading accusations that the Weekly World News and Beavis and Butt-Head are sources of ignorance and misunderstanding. I won't argue that either of these are intellectual, but at best these are forms of entertainment and that is largely a product of taste, not intellect. I couldn't risk wasting my time reading anoth ...more
Nov 02, 2011 rated it really liked it  ·  review of another edition
If Richard Dawkins' The God Delusion is a nuclear bomb in the atheist arsenal, Carl Sagan's The Demon-haunted World is an anti-personnel mine.

Where Dawkins goes for maximum destruction, piling the misery and mockery on those he's battling, Sagan doesn't even acknowledge his enemy. The Demon-haunted World poses, instead (and very effectively), as a book in defense of skepticism, a book persuading the unskeptical to embrace reason in the form of open-mindedness, the pursuit of evidence, and a thir
Joy D
Carl Sagan takes on pseudoscience. This book extolls the value of skepticism, critical thinking, and the scientific method. It should be required reading in my opinion. Unfortunately, those that could benefit most from applying more rigor in deciding what to believe will likely never read it. Originally published in 1995, he has proven to be prescient, as pseudoscience is even more prevalent than ever in recent years. Witness the rise in the number of shows about ancient aliens and paranormal ac ...more
Jan 24, 2017 rated it it was amazing  ·  review of another edition
Wow. Just wow. This is one of the great paeans to science, logic, and critical thinking buttressed by philosophy and deep moral sensibility. This is the first book of Sagan's I've read, I was so impressed, wonderfully written, very accessible and easy to read. He is a scientist by training, a highly critical thinker, but he is clearly a very multidimensional multitalented man. He has grounding in many other areas outside of science, including philosophy, political science, questions of morality, ...more
Mar 23, 2011 rated it did not like it  ·  review of another edition
I was very disappointed in this book. I seriously don't understand why people consistantly rated this book so highly. I'm really out of synch on this one...and here's why:

Carl obviously had an ongoing religious relationship with science and boy, is he ever tiresome about it. What a reckless evangelist! He condemns everything that does not stand up to science's demonstrable standards (whether such application is appropriate or not) and then....he violates the same standards time and again in his
Aug 09, 2016 rated it really liked it  ·  review of another edition
. . . every question is a cry to understand the world.

In a nutshell, Sagan valiantly attempts to understand why people believe weird stuff, then explains why they shouldn't. I particularly enjoyed the several excellent chapters on the importance of literacy and education. There's also a probing (Sorry!) look into alien abductions.

I think this quote, included in the book, sums everything up nicely:

[I]gnorance more frequently begets confidence than does knowledge: it is those who know little,
Mar 12, 2015 rated it it was amazing  ·  review of another edition
Shelves: read-in-2015
If Carl Sagan was alive today I think he would probably cry if he saw the state of the world. He wrote this book as a kind of wake up call to the people and the government, he pointed out how bad the education system is, he tries to get people to understand how important science is, he warns us not to watch so much crap on TV, go out and get some real-life experiences and he warns us about the government abusing the bill of rights.

Well it looks like everybody has ignored him, in fact to me thing
Dec 18, 2018 rated it really liked it  ·  review of another edition
Ever read one of those books you SWEAR you've read before. Nonfiction? Where every single point seems to have been made elsewhere?

Well, that's where this book went with me. From witch trials to alien abductions to conspiracy theories and a lot more, Sagan extols us to bring rational thought back to our lives. The scientific method is ABSOLUTELY ESSENTIAL.

I totally agree, and that's why I kept reading despite every single point being a re-hash... but that's me. Sometimes we like to be reminded wh
Daniel Bastian
Nov 29, 2011 rated it it was amazing  ·  review of another edition
Shelves: reviewed
“We’ve arranged a global civilization in which most crucial elements profoundly depend on science and technology. We have also arranged things so that almost no one understands science and technology. This is a prescription for disaster. We might get away with it for a while, but sooner or later this combustible mixture of ignorance and power is going to blow up in our faces.” (p. 26)

The omen above was put to print in 1995 and echoed throughout Carl Sagan’s prolific career as both practition
Greg Brozeit
Dec 12, 2013 rated it it was amazing  ·  review of another edition
Recommends it for: Everyone
Shelves: science
I consider this book to be among the most important in my library. Carl Sagan wrote it when he knew he was dying of cancer. He had an unmatched gift of conveying and explaining science to make it understandable and relevant to non-scientists. For that reason alone, it is not far-fetched to list him among the great scientific minds of the 20th century.

In this valedictory statement of scientific philosophy, Sagan elevates the idea and relevance of the scientific method in our daily and public live
Michael Jandrok
Jul 05, 2019 rated it it was amazing  ·  review of another edition
So if we take the Wayback Machine to the year 1995, you will find me out of college, working as an operations manager in retail despite my lofty aspirations to anthropology and later, nursing, as career choices. But I had a family to support, and the money was good even if the hours really sucked. What the hell does that have to do with this review? Well, I was involved in an awful lot of hiring and firing decisions when I worked for Foley’s (later Macy’s), and I noticed something interesting. M ...more
Jenny (Reading Envy)
Though a bit dated because of its original publication date in the late 90s (see this review for a few updates, the pleas for facts, scientific method, and science scholarship are timeless. I downloaded the audio because the narration duties are shared between Seth Macfarlane and Cary Elwes, with an introduction by Sagan's last wife in her own voice. (The audio production is much more recent, 2017.... I suspect the whole fake news thing may have inspired it!)

Sagan takes on many issues of pseudo
This book is a favorite of mine. It’s non-fiction. It’s very full of science and scientific principles and explanations. It’s also full of respect for those who want to understand the world better. And that is Carl Sagan for you in a nutshell: A caring person, a scientist who throughout his life always took other people seriously, and endeavored to understand them and help them.

Very few scientists, I think, have taken the time to consider other people’s fears, their anxieties and compulsions. Sa
Jun 11, 2020 rated it it was amazing  ·  review of another edition
Shelves: non-fiction, science
The Demon-Haunted World was originally published in 1995. Twenty five years may have passed since, but this book remains as important today as it was back then.

As a whole, this book represents the defense of scientific thinking and skepticism against pseudoscience and superstition. Carl Sagan explains why scientific thinking is essential and breaks down some of the most popular myths and pretensions of pseudoscience. According to Sagan, the temptation to irrationality is not only a cultural erro
May 舞
Jan 30, 2019 rated it it was amazing  ·  review of another edition
Shelves: nonfiction
As expected, this book was very interesting, insightful, and relevant to our world today. I felt Sagan's passion emanating from the pages, and it has given me even an even greater motivation to pursue the goal I've been chasing for the past 3 years, which is to be educated, willing to question authority whatever form it takes, and to engage my critical faculties and be able to form my own opinions. It was Carl Sagan that showed me the path in 2016 when I read his book Pale Blue Dot, which was th ...more
Steve Wiggins
Apr 27, 2018 rated it it was amazing  ·  review of another edition
After reading a credulous book about demons, I turned to a scientific one. Carl Sagan was one of the most gifted science writers of his day. This is an enjoyable collection of what might be better termed essays than a long disquisition. Sagan has offered here a strong case for not only science, but for education in general. He frequently makes the point that scientists are portrayed negatively in the media, although from the outside it often appears to be the opposite. Perhaps it depends on your ...more
May 08, 2020 rated it it was amazing  ·  review of another edition
I was surprised by how relevant this was even though it's almost 25 years old. Sagan wanders through a variety of topics (see ToC below) so chapters often feel like essays, although they flow together well & some are written with another. That means they vary somewhat in tone. All good, but some were better than others. The second chapter "Science & Hope" impressed me with the sheer number of sayings I wanted to remember. The next to the last chapter "Science & Witchcraft" was really eye-opening ...more
Ross Blocher
Oct 25, 2017 rated it it was amazing  ·  review of another edition
I don't feel hyperbolic saying this is one of the best and most important books ever written. I can only kick myself for having left it on the shelf so many years. In his characteristic congenial, non-threatening, well-studied, literate and abundantly clear way, Carl Sagan explains the importance of critical thinking, science and education. Sagan is a master of succinct conveyance, ever-shifting the reader's perspective to a better vantage point from which to understand a concept. That he manage ...more
Apr 18, 2008 rated it it was amazing  ·  review of another edition
Recommends it for: _People who want to think straight
Recommended to Tyler by: _A book review
Shelves: non-fiction
Sagan shows why learning to think in a contingent universe is ... well ... absolutely necessary. My reaction first reading the book was, "I've known for a long time that something's wrong. Now I know what." The discussions the author engages in in the book are eye-openers.

I cannot recommend this book to those who are highly sensitive about their credos, but on other hand, I don't think more open-minded religious people will at all see this as the scathing attack many opinion-makers have attribut
Jan 23, 2008 rated it it was amazing  ·  review of another edition
Recommends it for: Terry

My first Sagan book was Cosmos, which led me to this one. While Cosmos was good, this was great. It really opened my eyes to how important science is, and the underlying principles of science, and simultaneously how organized religion is virtually 100% philosophically opposed to science.

Religion: Don't think, don't reason, don't use logic. We'll (religious leaders) tell you what to think, what our god(s) wants you to think/do. Our holy book written centuries ago by primitive tribes with no knowl
Carrie Poppy
Jan 31, 2020 rated it it was amazing  ·  review of another edition
« previous 1 3 4 5 6 7 8 9 next »

Readers also enjoyed

  • The Elegant Universe: Superstrings, Hidden Dimensions, and the Quest for the Ultimate Theory
  • The Selfish Gene
  • The God Delusion
  • The Origin of Species
  • A Brief History of Time
  • The Greatest Show on Earth: The Evidence for Evolution
  • The Grand Design
  • The Universe in a Nutshell
  • God Is Not Great: How Religion Poisons Everything
  • "Surely You're Joking, Mr. Feynman!": Adventures of a Curious Character
  • The Blind Watchmaker: Why the Evidence of Evolution Reveals a Universe Without Design
  • Astrophysics for People in a Hurry
  • Physics of the Impossible
  • A Briefer History of Time
  • Why Evolution Is True
  • A Short History of Nearly Everything
  • Six Easy Pieces: Essentials of Physics By Its Most Brilliant Teacher
  • Black Holes and Baby Universes and Other Essays
See similar books…
See top shelves…
In 1934, scientist Carl Sagan was born in Brooklyn, N.Y. After earning bachelor and master's degrees at Cornell, Sagan earned a double doctorate at the University of Chicago in 1960. He became professor of astronomy and space science and director of the Laboratory for Planetary Studies at Cornell University, and co-founder of the Planetary Society. A great popularizer of science, Sagan produced th ...more

Related Articles

Need another excuse to treat yourself to a new book this week? We've got you covered with the buzziest new releases of the day. To create our...
43 likes · 7 comments
“Science is not only compatible with spirituality; it is a profound source of spirituality.” 2479 likes
“For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring.” 1603 likes
More quotes…