Download the free Kindle app and start reading Kindle books instantly on your smartphone, tablet or computer—no Kindle device required.
Read instantly on your browser with Kindle for Web.
Using your mobile phone camera, scan the code below and download the Kindle app.
Follow the author
OK
Calculating God Paperback – 28 June 2025
CALCULATING GOD
by Best-Novel Hugo and Nebula Award-winner Robert J. Sawyer
DID GOD CREATE THE UNIVERSE? THE ALIENS THINK THEY CAN PROVE IT!
The beloved Hugo Award-nominated classic about the conflict between science and religion — perfect for fans of Mary Doria Russell's The Sparrow and Carl Sagan's Contact. An alien walks into Toronto's Royal Ontario Museum and asks to see a paleontologist. Dinosaur expert Tom Jericho is stunned to learn that many worlds experienced the same five great mass extinctions Earth did. The alien believes this proves God tampers with the evolution of life. As Tom faces his own mortality, will his lifelong atheism be shaken by these revelations?
From this provocative launch point, Sawyer tells a fast-paced, morally and intellectually challenging story that just grows larger and larger in scope.
Calculating God is SF on the grand scale — with a very human heart.
Praise for Calculating God:
- "Spectacular; unusually thoughtful SF." —Publishers Weekly
- "The premise is astounding. A fine read; an intellectual thriller with real bite." —Edmonton Journal
- "The best science fiction novel of the year." —Denver Rocky Mountain News
- "An engrossing and nuanced novel, full of food for thought and meat for meditation, the sort of epistemological gavotte that reminds us why God invented science fiction in the first place." —James Morrow
- "An enthralling story. The climax is an exhilarating and touching glimpse of transcendence." —Starlog
- "Sawyer ends with grandeur worthy of Arthur C. Clarke." —The Denver Post
- "An action-packed yet highly philosophical, theological, and ethical story. Well-melded into the fast-paced plot, a wonderful dialogue goes on over the God question and over right, wrong, and the purpose of life. It's guaranteed to expand the minds of believers and non-believers alike." —Tom Harpur in The Toronto Star
- "Sawyer once again demonstrates his wild talent for innovative, iconoclastic storytelling as he relates a thought-provoking, sobering, yet wryly compassionate tale of one man's discovery of timelessness even as his own time is running out." —Library Journal
- "Exciting and emotional. Sawyer smoothly combines ethical questions and comical dialogue in a highly absorbing tale." —Booklist
- "Calculating God is the most captivating work of science fiction I've read since Carl Sagan's Contact." —Victoria Times Colonist
Robert J. Sawyer, a member of The Order of Canada and a Globe and Mail, Maclean's, and #1 Locus bestseller, is the author of 25 other novels, including The Downloaded, The Oppenheimer Alternative, Quantum Night, and FlashForward, the basis for the ABC TV series. He lives just outside Toronto.
- Reading age12 - 18 years
- Print length358 pages
- LanguageEnglish
- Dimensions15.24 x 2.29 x 22.86 cm
- Publication date28 June 2025
- ISBN-101988415446
- ISBN-13978-1988415444
Customers who viewed this item also viewed
Product details
- Publisher : SFWRITER.COM Inc.
- Publication date : 28 June 2025
- Language : English
- Print length : 358 pages
- ISBN-10 : 1988415446
- ISBN-13 : 978-1988415444
- Item weight : 612 g
- Reading age : 12 - 18 years
- Dimensions : 15.24 x 2.29 x 22.86 cm
- Best Sellers Rank: 1,232,469 in Books (See Top 100 in Books)
- 150 in Atheism (Books)
- 878 in First Contact Science Fiction (Books)
- 1,453 in Hard Science Fiction (Books)
- Customer Reviews:
About the author

Robert J. Sawyer is one of only eight writers ever to win all three of the world’s top awards for best science-fiction novel of the year: the Hugo, the Nebula, and the John W. Campbell Memorial Award. He has also won the Robert A. Heinlein Award, the Edward E. Smith Memorial Award, and the Hal Clement Memorial Award; the top SF awards in China, Japan, France, and Spain; and a record-setting sixteen Canadian Science Fiction and Fantasy Awards (“Auroras”).
Rob’s novel FlashForward was the basis for the ABC TV series of the same name, and he was a scriptwriter for that program. He also scripted the two-part finale for the popular web series Star Trek Continues.
He is a Member of the Order of Canada, the highest honor bestowed by the Canadian government, as well as the Order of Ontario, the highest honor given by his home province; he was also one of the initial inductees into the Canadian Science Fiction and Fantasy Hall of Fame.
Rob lives just outside Toronto.His website and blog are at sfwriter.com, and on Facebook, Twitter, and Patreon he’s RobertJSawyer.
Customer reviews
Top reviews from Australia
- 5 out of 5 stars
Well researched
Reviewed in Australia on 21 December 2023Religions, formed in primitive times with an advantageous bias and species-centric dogma: being rewritten with pure science with lots of room for modifications and additions. No more " it is written" in a book. Just that scientists are discovering that the Physics of this Universe are extremely fine tuned for life.
Sending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again
Top reviews from other countries
Iean Dobson5 out of 5 starsExcellent discussions.
Reviewed in Canada on 2 February 2025Start with 3 different species, add a few rednecks, and you’re set for a lot of very different approaches to everything. Good enough that I’ve purchased a copy for my priest friend.
Sending feedback...Thanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again
Dayal.5 out of 5 starsIntelligent, amusing, thoughtful and a refreshing SF read.
Reviewed in the United Kingdom on 26 May 2011This is the first book of Sawyer's I have read and it won't be the last. Sawyer presents arguments in a very amusing way and I often wonder if the aliens in the novel are supposed to be so human!
The book does have it's downsides, it seems quite hurried in places and lacking for ideas. I would have liked to seen a bit more of God in action as it were (without wanting to give away spoliers), instead of the alien and human intellectual chin stroking. It's also a bit clumsy with some of the coincidences. However the plausiable is very much the point of this book.
My biggest complaint about this book was I would have liked it to have been deeper, a bit more philosophical perhaps - another couple of hundred of pages would have been wonderful! Not that any of this detracts from this being a good book... merely I was sad to come to the end as quickly as I did.
If you're into the philosophy of religion, evolution, and the kind of musings stoned and idle university students come up with - then this one is for you.
(Couldn't help but imagine the Canadians in the book as looking like the Canadians from Southpark!)
Sending feedback...Thanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again
Cliente Amazon5 out of 5 starsEntretenido y provocador
Reviewed in Spain on 29 March 2024En este libro Robert toca varios temas controvertidos y provoca al lector a tener un pensamiento crítico. Es entretenido y con suficiente acción para mantener la atención.
Sending feedback...Thanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again
Sandra4 out of 5 starsInfelizmente só inglês.
Reviewed in Brazil on 14 September 2023Ainda estou lendo. Para quem gosta de conteúdos sobre ET... leitura perfeita.
Sending feedback...Thanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again
Emc25 out of 5 starsExcellent hard Sci-Fi and great philosophical discussion on God Existence
Reviewed in the United States on 3 June 2007Sawyer is a great hard Sci-Fi writer, finally we have someone who has the style of the good old masters. He is as good as Arthur Clarke in extrapolating science at his best times, as interesting in exploring the consequences of new scientific discoveries as Michael Crichton, but with better characters, and his philosophical discussion regarding God's existence rivals with Richard Dawkins's "The God Delusion".
In fact, Sawyer's novel explores more objectively every issue about the existence of God in a throughout manner, considering the latest knowledge in biology, genetics, evolution and cosmology, and without offending or criticizing modern religions, as Dawkins did. For those who read Dawkins's "The God Delusion", this novel will clarify why some consider that Dawkins' weakest argument has to do with the origin of life and the Big Bang. Despite of the fact this is just a sci-fi novel, through the discussion between Holus (the alien who believes in God as a matter of scientific truth) and Dr. Jericho (the Canadian scientist who is a hard atheist, Dawkins style), Mr. Sawyer present us with a fair and balanced argumentation for each position (deist -not to be confused as creationist- vs. atheist). The final is a brilliant, just a shame it is only a brilliant speculation, but based on hard scientific possibilities.
A book highly recommended for hard sci-fi fans, and also for those who enjoyed reading Carl Sagan, Paul Davies, Richard Dawkins and Stephen Hawking. I am looking forward to read Sawyer's other books, and I am just sad I didn't discover him earlier, since I haven't read a good hard science fiction novel from a new author since the 20th century.
Sending feedback...Thanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again






