THE COST OF KNOWING

by Ion Parreah

What happens when science looks backward and belief looks nowhere at all?
Some questions start innocently. Then they don’t.

Haunted by the brutal death of his childhood friend and numbed by a world that no longer persuades him, Father David Callaghan steps away from parish life and leaves a quiet Irish town for the vastness of the Kalahari Desert. Drawn by a scientific discovery among the San people—the most ancient living culture on Earth—he joins an anthropological expedition in the hope that looking backward might explain what has gone wrong in the human story.

In the desert, science speaks in data and fossils; belief, in silence and doubt. As the team fractures under philosophical tensions, ambition, and desire, a murder and a sudden disappearance unravel the expedition’s fragile order. Hunted by poachers and lost in the wilderness alongside a young anthropologist and a San boy, David is forced to confront questions no discipline can fully whether meaning can survive knowledge, whether love can coexist with vocation, and what a life is worth when certainty fails.

The Cost of Knowing is a lyrical novel in which anthropology collides with metaphysics, reason with longing, and modern certainty with ancient wisdom—a meditation on what remains of humanity when its oldest stories are stripped bare.

213 pages, Paperback

Published February 20, 2026

About the author

I write literary fiction and essays that explore the limits of truth, belief, and human nature. Shaped by life across cultures as a career diplomat, my work moves between novels and nonfiction—from the philosophical landscapes of The Cost of Knowing to Shakespeare-inspired reflections on power, illusion, and the stories we live by—and what happens when they break.

Reviews

[Akanksha S · Rating 3 out of 5]

The more we know, the more we realize how much we do not understand. This is the core idea behind Ion Parreah's book. It follows Father David, a Catholic priest in Ireland, who starts asking big questions about life after losing someone he cares about. He wants to understand why there is so much fighting, sadness, and suffering in the world. We are supposed to be super smart now.

Unable to get any satisfactory answer in Ireland, he decides to visit Namibia in Africa. He wants to study the San people. They are a group of humans who have lived there for a super, super long time. David thinks that if he looks at how humans used to live a long time ago, he can figure out where everyone messed up. Along the way, he meets new friends, faces danger, and learns more about himself.

Till the time he was in Africa, everything was okay for me, but when he returned to Ireland, he had the same confusion he had before. It becomes a little bit uneasy for me. Usually, we expect some kind of certainty from major life events, but his trip didn't give any. He went there for questions like what gives life meaning? Why do people suffer? Can faith and science exist together? which were still unanswered. Maybe this is how life is.

This book is pretty slow. It is mostly people talking and thinking. There are long philosophical talks, and they are necessary for showing David's growth, but they will only appeal to readers who are deep thinkers. All I get from the novel is that it's okay to not know everything. It is not knowledge that matters, but the wisdom that there is no certainty in life.

[Rahul · Rating 3 out of 5]

If I had to describe Ion Parreah's The Cost of Knowing in one word, that one word would be 'existential crisis'. The protagonist is going through an existential crisis after the loss of someone close. He embarks on a journey to find meaning, but instead of finding it, he becomes more confused and ultimately accepts reality. This is the story in a nutshell.

What works for the book:

1. You will start questioning everything. This is a philosophical book, or like a giant why? Why so much hatred, suffering, etc.?
2. David is easy to relate to because he struggles with doubts, regrets, and loss, just like many people do.
3. It is okay to not have all the answers. Sometimes being smart just means knowing that life is a giant mystery.
4. Long conversations between Jack and David, or David and Marie, about faith, purpose, evolution, or humanity are priceless. Personally, my favorite part of the book.
5. Namibia, the Kalahari Desert, the campfires, the desert nights, and the San community all feel real and important to the story.

What doesn't work:

1. It is a serious and slow book. Basically, like a very "rainy day while wearing a sweater" kind of book.
2. It is a long therapy session where the protagonist is reflecting on his life. There are some instances of excitement with murder, mystery, kidnapping, poaching, etc., but the main theme has overtaken the book.
3. If you hate open endings, you’ll be annoyed.

[Charles Magesa · Rating 5 out of 5]

Deeply Engaging and Thought-Provoking

Every human being comes to a turning point in their life, and THE COST OF KNOWING by Ion Parreah is a perfect example of this. Father David is shattered by the news of the murder of his childhood friend, and he seeks to refocus and find purpose in life; his journey is more of self-discovery than just finding out where humanity went astray. 

The story grows more interesting as the priest meets a team of anthropologists in the African desert; their interaction prompts the reader to pause and reflect on matters of faith, religion, and self-consciousness. The most exciting part is where David falls in love with Marie. The book was well-written and professionally edited and contains no grammatical errors. The plot was thoughtfully crafted, and scenes were vividly described and immersive that reading this book feel like experiencing the occurrences unfold.

[Donna Emperador · Rating 4 out of 5]

Philosophy for modern times

THE COST OF KNOWING is the story of a priest who becomes disheartened by life events and his daily observations of people. He embarks on a journey to an ancient people in Africa to find where we went wrong as a human race.

It becomes a journey of one man's pilgrimage to find himself. As he searches, he learns from these people that a simple life is sometimes better than what we consider progress.

The author paints a picture that makes the reader actually feel that he is in Africa. The story also contains action, love, and suspense, in addition to philosophy.

This is a great book for anyone interested in philosophy or questioning their spirituality. It also makes a fascinating read for anyone interested in Africa or anthropology.

[Catherine Humphrey · Rating 5 out of 5]

David Callaghan sets out to the Kalahari desert in Namibia in search of the theory about the early onset of humanity. He had chosen a life of celibacy which went against the wishes of his mother who had envisioned a future with grandchildren playing in her backyard. He decided to take step back from priesthood so as to pursue another venture in Africa.

This piece of literary fiction focuses on survival and experience that is a far cry from the life he was used to in Newcastle. Being immersed in the way of life of the San people and how they live their life with the curiosity of a child is quite an eye opener and a reminder that life should be lived in harmony with each person.

[Sue · Rating 5 out of 5]

The Cost of Knowing follows a grieving priest who travels to the Kalahari Desert on an anthropological expedition in search of answers after his faith begins to collapse, and what unfolds is part philosophical exploration, part survival story, and part emotional reckoning. I really loved how layered this book felt. It asks huge questions about belief, science, grief, and what gives life meaning, but it never loses its momentum as a story. If you like literary fiction that makes you think while still pulling you through the plot, this is absolutely worth picking up.

[Abigail L. · Rating 5 out of 5]

A Bold Literary Exploration of Faith, Science, and Human Meaning
In The Cost of Knowing, existential inquiry and tension merge in a striking literary work that is as intellectually ambitious as it is emotionally resonant. Through the unraveling journey of Father David Callaghan, a priest searching for truth in the Kalahari Desert, the novel examines the uneasy collision of anthropology, belief, grief, and survival with remarkable sophistication. Atmospheric, philosophical, and deeply human, this is literary fiction for readers who crave substance alongside suspense.

[Scovia · Rating 4 out of 5]

A very interesting read, A priest is conflicted whether to stay a priest or leave that life in search of answers. It sounds more like things that would happen in modern times. He goes looking for answers and he finds himself in a world different than what he’s used to.
I loved the details, it felt like traveling through a book and the story line was impeccable. It had a mix of things, from church to action to culture shock. It was a good read.

[William Reilly · Rating 1 out of 5]

Very awkward writing style. Seems like a first treatment of a novel to be filled in later. How we get from one event to another seemingly has a great impact on the main character and the choices they make, but the reader isn't allowed into how or why those decisions are made.

[Rhonda · Rating 2 out of 5]

Love learning but make it interesting. Informative, but too schoolwork like

[Samantha · Rating 5 out of 5]

A haunting journey into belief, doubt, and the search for meaning.