🕯️ Occult Philosophy

Mental Radio (Russell Targ Editions)

✍️ Sinclair, Upton
Reader Score
4.6
(8 reviews)
$16.95
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📚 WHAT THE BOOK IS ABOUT

While best known for social reform, Sinclair turned his analytical mind to the paranormal. Teaming with his wife Mary, he conducted hundreds of controlled tests to validate her alleged clairvoyant abilities. By sealing drawings in envelopes and measuring transmission accuracy, they amassed irrefutable data proving the mind can broadcast and receive thoughts. This work bridges literature and occult science, documenting a pivotal moment in parapsychology where empirical method met metaphysical mystery.

🕯️
Occult Philosophy
🏛 Hampton Roads Publishing Company 📖 224 pages 📔 Paperback ISBN: 9781571742353
Fun Fact
Sinclair’s greatest triumph here is methodological clarity. He avoids mystical vagueness, offering instead cold, hard data that shocks the rationalist. It sits uniquely in the field, bridging the gap between literary memoir and laboratory report. Skeptics may dismiss the premise, but the experimental design is too compelling to ignore. A essential artifact for any collection dedicated to the history of the paranormal.
📚 This Book in Collections

📝 Description: Mental Radio (Russell Targ Editions)

Upton Sinclair is primarily known as the Pulitzer Prize-winning author of The Jungle, Oil, and Dragon's Teeth, and as a fiery advocate of social justice and reform. Few know, however, of Sinclair's deep interest in, and connection to, psychic research. Sinclair's own wife, Mary Craig Kimbrough, claimed to have "mind reading" or telepathic abilities, and asked Sinclair to help her better understand these abilities. He devised a fascinating series of 300 tests that incontrovertibly proved the reality of telepathy while revealing the vast, untold powers of the mind. In one room, Sinclair would make a drawing and place it into a sealed envelope, while in another, Mary would "tune in," retrieve the image, and make her own copy. Or she would record a telepathic message sent from someone far away. Her accuracy rate was astonishing, leaving no room for random chance as an explanation, as they continued to collect scientific data over three years. In Mental Radio, Sinclair describes remarkable experiments, comparing telepathy to radio broadcasting, with one brain sending out a "vibration" and another picking it up. The results convinced Sinclair that telepathy is real, that it is unaffected by distance, that it can be cultivated, trained and--most importantly--can be verified and studied scientifically. For the first time in many years, here is the complete text of Mental Radio, including Mary Craig Kimbrough's well-tested instructions on how to learn the "art of conscious mind-reading." Here is the classic book that impressed Albert Einstein who, in his preface to Mental Radio, praises Sinclair for being a conscientious observer and writer and for his good faith and dependability in reporting paranormal research. William McDougall, known as the "Dean of American Psychology" at the time, was so inspired by Sinclairs' work that he established the parapsychology department at Duke University, which went on to become, for a time, the country's premier paranormal research institution.

💎 Expert review

“
💎
Esoterica Books editorial team
Occult literature desk
While this volume provides compelling data on telepathy through Sinclair's rigorous testing with his wife, it may not suit readers seeking mystical narrative or subjective spiritual experiences. The focus remains strictly on empirical validation and experimental accuracy rather than philosophical depth or esoteric tradition. Critics expecting literary flair typical of Sinclair’s social reforms might find the tone dry and technical. However, for those who value parapsychological history and the application of scientific control to paranormal claims, it stands as a significant document. It is best approached as a case study in evidence gathering rather than a guide to occult practice or a philosophical treatise on consciousness.
✓ EDITOR'S REVIEW

📖 Why choose it

📖

Why this book is worth reading

Readers fascinated by the intersection of rigorous scientific methodology and esoteric phenomena will find this book particularly rewarding. It offers a unique perspective from Upton Sinclair, leveraging his analytical reputation to validate telepathy through controlled experiments with his wife. Those interested in the history of parapsychology or the validation of psychic abilities through data will appreciate the detailed documentation of sealing drawings and measuring transmission accuracy. This text serves as an essential bridge for those seeking empirical evidence behind metaphysical claims, providing a structured exploration of mental radio that appeals to both skeptics looking for proof and occultists interested in the scientific legitimization of their field.

⭐ Reader reviews

The starting rating comes from the team Esoterica Books —
⭐ Esoterica editorial review Editorial rating 4.5/5
★★★★★
Readers fascinated by the intersection of scientific inquiry and psychic phenomena, or those curious about how a famous literary figure applied his intellect to the occult.

Reader rating

4.6
Based on 8 reviews
5
5
4
3
3
0
2
0
1
0
E
Elena E.
March 9, 2026
Good addition to the shelf

Long-time student of the esoteric here. Every rereading turns up something I missed. It rewards patience more than any book I've bought this year. A few pages arrived with light corner wear, though nothing serious. Still worth having on the shelf.

M
Maya W.
January 29, 2026
Essential reading

Added this to my reference shelf. Plenty of passages worth underlining; my copy is already full of margin notes. Recommended if you're ready to do the work.

S
Silas A.
December 19, 2025

Honestly wasn't sure what to expect, but I'm impressed. The ideas are old but land with surprising force today. Delivery took a bit longer than quoted. Happy enough with the purchase.

D
Daniel P.
May 7, 2025

Grabbed this during a weekend order. The ideas are old but land with surprising force today. There's real depth here that reveals itself on a second reading. Deserves a place on any esoteric bookshelf.

O
Opal H.
January 6, 2025
Exceeded expectations

Was skeptical at first. I appreciated how the argument builds steadily from first principles. Glad I finally picked this up.

W
Walter D.
December 31, 2024
Deep and rewarding

Exactly what I was looking for. The material is presented clearly and the structure makes it easy to revisit key passages. Highly recommend to serious students.

A
Andrew S.
September 23, 2024
Beautiful edition

Came across this title in a footnote and had to track it down. A text you study rather than simply read.

E
Esoterica Books editorial team

While this volume provides compelling data on telepathy through Sinclair's rigorous testing with his wife, it may not suit readers seeking mystical narrative or subjective spiritual experiences. The focus remains strictly on empirical validation and experimental accuracy rather than philosophical depth or esoteric tradition. Critics expecting literary flair typical of Sinclair’s social reforms might find the tone dry and technical. However, for those who value parapsychological history and the application of scientific control to paranormal claims, it stands as a significant document. It is best approached as a case study in evidence gathering rather than a guide to occult practice or a philosophical treatise on consciousness.

❓ Frequently asked questions

It is a non-fiction account of experimental results, presented by a renowned author but grounded in data collection.
No, it is best appreciated as a historical document of scientific methodology applied to the unknown.

📖 Who should read this

Readers fascinated by the intersection of scientific inquiry and psychic phenomena, or those curious about how a famous literary figure applied his intellect to the occult.

🎯 Key themes and symbolism

Scientific Validation of ESP

Marital Psychic Collaboration

Mind-as-Radio Metaphor

📜 Historical context

Published in the early 20th century, this work emerged during the height of the Spiritualist movement and the dawn of modern parapsychology. It reflects an era where intellectuals sought to legitimize psychic claims through experimentation rather than mere faith, positioning telepathy alongside emerging radio technology as a natural, albeit hidden, physical force.

📚 Glossary

Mental Radio
Clairvoyance
Parapsychology

📔 Questions to reflect on

  1. How would you design a test to prove a psychic ability you doubt?
  2. What does the 'radio' metaphor suggest about the nature of consciousness?
  3. In what ways does scientific inquiry clash with or support spiritual belief?

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