Jump to ratings and reviews
Rate this book

Dianetics: The Evolution of a Science

Rate this book
From the author of the #1 New York Times bestseller Dianetics: The Modern Science of Mental Health, with over 20 million copies sold

The hidden source of your worries, upsets and insecurity REVEALED.

Written to coincide with the release of Dianetics: The Modern Science of Mental Health, this book was originally published as a book-length feature in a national magazine. The issue sold out within days, triggering thousands of letters and creating a storm of interest that grew into a worldwide phenomenon.

""The optimum computing machine is a subject which many of us have studied. It might be somewhat astonishing, at first, to conceive of such a computer. But the fact is, the machine is in existence. There are billions of them in use today and used in the past. In fact, you've got one. For we are dealing with the human mind."" L. Ron Hubbard

Find out how the optimum computing machine the mind really works
Learn how wrong answers enter into the mind and cause further wrong answers.

Discover your mind and how it works.

214 pages, Hardcover

Published July 14, 2007

14 people are currently reading
232 people want to read

About the author

L. Ron Hubbard

1,930 books650 followers
L. Ron Hubbard is universally acclaimed as the single most influential author and humanitarian of this modern age. His definitive works on the mind and spirit—comprising over 350 million copies in circulation and more than 40 international bestsellers—have resulted in a legacy benefiting millions and a movement spanning all cultures.

Ratings & Reviews

What do you think?
Rate this book

Friends & Following

Create a free account to discover what your friends think of this book!

Community Reviews

5 stars
159 (47%)
4 stars
27 (8%)
3 stars
49 (14%)
2 stars
35 (10%)
1 star
63 (18%)
Displaying 1 - 30 of 35 reviews
Profile Image for Cory Howell.
128 reviews4 followers
April 13, 2009
Like the famous Dianetics: the Modern Science of Mental Health, this book is absolute bullshit from beginning to end. That being said, it is fascinating to read! The way Hubbard can use scientific sounding language, passive voice and an overall tone of superiority to make his "research" sound valid is an impressive feat. Very enjoyable, but 100% UNbelievable...
Profile Image for Cassandra.
9 reviews1 follower
September 20, 2010
I'm not a Scientologist but reading about the principles behind the religion is fascinating. From a scientific perspective, frankly, it's insane, but it's all a strange sort of logical. I'd suggest picking up a Dianetics book if you have an evening to waste and feel like reading something mind-screwy.
Profile Image for Christian Lipski.
298 reviews21 followers
November 15, 2007
This reprints the original article introducing the 'science' of Dianetics, which appeared in Astounding Science Fiction, May 1950. There's a lot of hand-waving and "this was obviously right" and 'science' arrived at by just thinking that it's probably so or through research that is never expanded on. It's hilarious. Dianetics advances "non-germ disease theory", in that nearly everything wrong with people is psychosomatic, like the common cold and arthritis. Oh, and pre-natal memory, from the moment of conception (and even before).

Oh, and I wish there was a zero-star option. (edit - there is, you just clear the star rating)
Profile Image for Lindsey.
62 reviews
January 2, 2019
This book seems like an essay that is a stream of consciousness by L. Ron Hubbard. He discusses the "science" of Dianetics, but for all of his discussion about research, he provides absolutely no evidence for any of his findings. We are simply supposed to believe it because he said he saw it happen. This was originally published in 1950, but there have been many revisions where specific details of Hubbard's research could have been included. Because it is not there, I must assume that it does not exist. He creates new words and new ideas, and he discards previous research (which has been recorded with actual evidence) by psychologists and scientists before him. Further, he contends that we have "engrams" all the way back to four days after we were conceived, but again, provides absolutely no evidence (except for his word) that this is true. In fact, a note was added in later editions that says: "Validating this work, medical authorities have since released much data on the phenomena discovered by Hubbard concerning both birth and prenatal engrams..." (92). Again, no evidence is provided, aside from references to being published in "such magazines as Time, Reader's Digest, and the Ladies Home Journal." Hubbard claims that we can go clear and be cured of all of our human ills if we can clear our engrams. No evidence as to how this can be (or has been) done except for his statement that he did it. I am reminded that this author does not have any credentials that would support his work in this field. He did two years at George Washington University in engineering, but apparently he flunked out. He also served in the Navy, doing administrative work. No psychology degrees. And yet, he spends an awful long time discussing the brain, memories, and his "Research" to support Dianetics. This book was poorly written and contained no evidence whatsoever for the claims which it contains.
Profile Image for Calle.
120 reviews18 followers
June 18, 2015
In this short volume (110 pages, the rest consists of glossaries and descriptions of other LRH books), Hubbard describes how he allegedly discovered the "reactive mind" and the "engrams" that cause all sorts of "aberrations". He mentions lots of experiments that were allegedly made and claims that Dianetics has been shown to work in every single case. But he provides no evidence, so despite his claims that Dianetics is a science, there's no way for the reader to verify any of his claims, only take his word for it. There have been no independent studies that have shown Dianetis to have any merits at all. This book is recommended only to those who want to understand what Dianetics is all about without having to read the much longer Dianetics: The Modern Science of Mental Health.

(Review from July 2012)
Profile Image for Ike Khan.
27 reviews3 followers
Read
May 1, 2009
Interesting but flawed proposal of man's "reactive" mind. A lot of what it purports to have "discovered" is already well documented. Although it professes to be a scientific book it skilfully avoids any scientific methodology or presentation in its execution. There are many parts of it that are written in a naive fashion and it comes across as if the writer was trying to impress the reader with his use of language and corny humor.
Profile Image for Brandon Harrod.
4 reviews2 followers
February 15, 2015
Meh. I still think the Scientology thing is a lil whacko. But this book gives me a little more insight into the groundwork for it. The most infuriating times in this book come when the author just simply states "does (blah blah) work? It does!" That's not scientific proof! That's just ramblings. It is a bit rambley at times but again like most religions has so basic roots in good and truth. I'd be willing to look into the next book.
Profile Image for djcb.
621 reviews8 followers
September 8, 2016
Dianetics gives an overview of the "science" of dianetics. Not worse than many self-help books in its mix of common-sense, "insight" and wild extrapolations of scientific knowledge (a per mid-20th century). However, more influential, which was my reason for reading.
Profile Image for Carl Neumann.
2 reviews8 followers
March 11, 2015
Great book once you understand it. I find Dianetics: The Modern Science of Mental Health much easier to understand as it lays out Mr Hubbards discoveries clearer and give good examples. I recommend reading that one first.
Profile Image for Blair.
47 reviews1 follower
March 25, 2018
This book is fascinating for one reason and one reason only: SOMEHOW people believe this is anything but pure bullshit, through and through.
37 reviews
December 26, 2019
An absolute crock of shit. Rambling and nonsensical with circular arguments. But what did you expect, really?
Profile Image for Tosca Wijns-Van Eeden.
826 reviews5 followers
March 4, 2020
Wat een klinkklare onzin. Zogenaamd wetenschappelijk, maar nergens wordt verwezen naar bewijzen, gepubliceerde onderzoeken, etc. Maagzweren krijg je omdat tijdens de zwangerschap je moeder een poging tot abortus heeft gedaan... really? Ik dacht het dus niet.
Alle klachten zijn volgens Hubbard psychosomatisch en kunnen door het herhaaldelijk vertellen erover onder stimulans van caffeïne zo worden veranderd in het brein, dat overigens wordt vergeleken met een computer en een rekenmachine, dat je een "clear" bereikt. Wat dat inhoud wordt totaal niet uitgelegd. Ook niet door mensen die lid zijn van de Scientology beweging. "Dat is gewoon wat je voelt" werd er letterlijk gezegd.

Niet de moeite waard.
4 reviews
March 9, 2025
I liked it. It is shorter than Dianetics but it has all the basic elements of why Dianetics works. Good first book to read by L. Ron Hubbard.

If you want to know about Dianetics don’t listen to what people have to say. Read a book and decide for yourself.
Profile Image for Ryan Fletcher.
Author 24 books4 followers
April 18, 2023
Good introduction to Dianetics: The Modern Science of Mental Health.
4 reviews
March 8, 2025
Great Read!

This book gave me so much clarity on how the mind works. It’s clear, engaging, and really makes you think. Highly recommend!
2 reviews
October 1, 2025
This book is a must read to u derstand the barriers that are holding a person back from their best life. Very easy read. This book empowers a person to learn more. Highly recommended!!!
Profile Image for Raymond Lady.
6 reviews
November 13, 2025
Total nonsense. I was hoping to find some entertainment value but was disappointed with even that.
Profile Image for Matija V.
13 reviews6 followers
Read
July 1, 2014
first off, I don't know much about the cult Scientology has presumably become, years after Hubbard began churning out his theoretical-psychological books. Despite my awareness that there ARE sketchy details, I was delighted to find that this book, perhaps unique for Hubbard(?), was a relatively simple treatise that hardly maintained anything ridiculous. There was 1 point I cringed when a non germ-theory of disease was proposed, but I insist that the claim is less arrogant than it sounds. In my own language (taking influence from Timothy Leary's work & Ken Wilber's model), Hubbard says that the potentially integrated, healthy, advanced human personality is inhibited/prevented by what he calls "engrams". Engrams are what Leary would call imprints on the lower circuits of consciousness. Unconscious behaviour habits, robotic emotional responses, SLEEP. Lower chakras that are in major tension, energy not circulating upwards. In Wilber's terms, these are the prepersonal pathologies that prevent healthy integration of the personality (preventing higher development to vision-logic or 2nd tier; this is what I think Hubbard refers to as the Optimum). Dianetics is then his claim of a science capable of healing these pathologies, allowing development, energizing the expansion of moral-cognitive development. In theory, this is a profound work for the 50s. He confirms what Grof would later see in over a thousand psychedelic sessions: pre-natal, perinatal experiences. He acknowledges the unity of mind & body, hence the causal efficacy of the mind ON the body (this is perhaps the arrogant over emphasis in the work; that strong engrams are the ONLY factor needed to treat disease). This book shows no actual evidence, just testimony. All in all, from this book I gain a respect for Hubbard's passion for healing the psychic damage humanity harbours, deep in the "subconscious". Hubbard discovered a way to crack this so called "unconscious" open and examine what came pouring out. For that, surely a pioneer researcher. The inflexible conclusions are the irksome aspect: perhaps Scientology's pathology is the inability to think beyond Hubbard.
Profile Image for Bruce Deming.
173 reviews16 followers
October 11, 2016
Amazing book. L Ron Hubbard reviews his own thoughts and tests conducted in discovery and remedy for the Reactive Mind. It took some doing to put the pieces together but is not overly complex and a sort of personal journey in tone as well as fairly succinct to read.

Mr Hubbard's reluctance to enter the field of religion is expressed, as he is on the discovery trail of the reactive mind, but in later books on Scientology he found the existence of the individual as a spiritual being irrepressible and yet led to more.

This book is an excellent formative landscape of initial discoveries and how conclusions were made.

Tight.

Profile Image for Frank Dickinson.
1 review2 followers
January 24, 2016
If you interested in Dianetics, start with this book before reading Dianetics Modern Science of Mental Health. This explains how LRH came up with the science of Dianetics. It is a short read and lays out the basic ideas expounded upon in DMSMH.Dianetics: The Evolution of a Science
Profile Image for Wolfie.
7 reviews3 followers
June 17, 2009
I am a scientific kind of guy. And this book is the most scientific text I ever read on the human mind.
Profile Image for Anthony Ventrello.
112 reviews2 followers
January 13, 2011
How did LRH come up with Dianetics? What was it like in its early days? Read this book to find out.
Displaying 1 - 30 of 35 reviews

Can't find what you're looking for?

Get help and learn more about the design.