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A Thought Without Collision
Not yet published
Expected 6 Apr 27'An utterly distinctive voice in contemporary Irish literature' Irish Times
'One of our most original writers' Irish Independent
Summer, 1923. Six-year-old Catherine Carolan grows restless on her parents' farm. It's already clear that her intellect will soon outgrow the two-room schoolhouse across the fields. But in post-Civil War Ireland, an education is not an easy thing for a girl to access, and young Catherine is not the only one in her family who will come to tire of rural life.
Summer, 1951. To ease him through his final days, Dr. Josef Alois calls for someone from his past. Enter Catherine Carolan, now an Oxford professor. As Alois's mind and body falter, Catherine must decide how far she will follow this man that she loves.
A novel in two strands, A Thought without Collision is a beautiful meditation on how we construct our relationship to the world around us.
'An original voice, a writer who has come to recreate the world on his own terms' Colm Tóibín
'An elegant rarity in contemporary fiction' Cathy Sweeney
'One of our most original writers' Irish Independent
Summer, 1923. Six-year-old Catherine Carolan grows restless on her parents' farm. It's already clear that her intellect will soon outgrow the two-room schoolhouse across the fields. But in post-Civil War Ireland, an education is not an easy thing for a girl to access, and young Catherine is not the only one in her family who will come to tire of rural life.
Summer, 1951. To ease him through his final days, Dr. Josef Alois calls for someone from his past. Enter Catherine Carolan, now an Oxford professor. As Alois's mind and body falter, Catherine must decide how far she will follow this man that she loves.
A novel in two strands, A Thought without Collision is a beautiful meditation on how we construct our relationship to the world around us.
'An original voice, a writer who has come to recreate the world on his own terms' Colm Tóibín
'An elegant rarity in contemporary fiction' Cathy Sweeney
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Expected publication April 6, 2027
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Displaying 1 - 5 of 5 reviews
August 23, 2026
The book’s opening chapter positions this as a novel in two strands. The analogy used is that of a piano keyboard with the starting point as middle C and your right hand striking ascending notes and your left hand striking descending notes, alternately. (It probably helps if you’re familiar with a piano keyboard.)
The ‘ascending’ strand follows Catherine from the age of six growing up on her parents’ farm in rural Ireland. Her schoolteacher, Master Francis, quickly recognises she possesses extraordinary mathematical ability far beyond her years. Guiding her through increasingly complex concepts provides him with a sense of fulfilment, something lacking in his interactions with his other pupils many of whom struggle with simple tasks of reading and writing. As we discover, Catherine perceives numbers not just as things to be used to solve equations or calculations, but as objects that can possess different properties. Exploring such concepts will set the direction of her future academic career.
Catherine’s early years immerses the reader in the life of a rural Irish village, introducing some fascinating characters. As in the author’s previous book, The Geometer Lobachevsky, many of these possess obsessional traits. Austin, a local photographer, dreams of building a golf course (as it happens on the land currently owned by Catherine’s family) and has spent time drawing a design in meticulous detail, including calculations of degree of difficulty based on each hole’s topography, length and the effect of prevailing winds. It’s sight of this map that first prompts Catherine’s thoughts about the properties of numbers.
The descending strand takes place thirty years later and focuses on Catherine’s former university mentor, Dr. Josef Alois, as he lives out what we know to be the final weeks of his life in a house he built himself in a remote part of Scotland. ‘This man is more unwell than he believes and will perish in one month and eleven days.’ Alois’s story is one of mental and physical decline whereas Catherine’s story has been of intellectual progress and achievement.
Their relationship is based on shared intellectual curiosity about subjects such as mathematical probability, philosophy, logic and linguistics. Also by the nights they spent together in air raid shelters during the Blitz. Briefly perhaps there was the possibility their relationship may have moved beyond friendship, on Catherine’s part at least. For Alois, it’s more a case of admiration for Catherine’s exceptional intellect. Their bond remains strong enough that Catherine travels to Alois’s home to care for him through his illness. There are moving moments as Alois becomes frailer and less and less able to communicate his wishes clearly. The remote location of the house means there’s a claustrophobic feel to this strand of the story.
Catherine is a mathematical prodigy. I am not. This is where I struggled because many of the mathematical concepts went over my head and I found myself skipping sections that were just too abstruse. I think this prevented me forming a stronger connection with the story. Although I admired the wonderful writing, I was left with the feeling I was not quite clever enough to appreciate everything the author was trying to convey.
The ‘ascending’ strand follows Catherine from the age of six growing up on her parents’ farm in rural Ireland. Her schoolteacher, Master Francis, quickly recognises she possesses extraordinary mathematical ability far beyond her years. Guiding her through increasingly complex concepts provides him with a sense of fulfilment, something lacking in his interactions with his other pupils many of whom struggle with simple tasks of reading and writing. As we discover, Catherine perceives numbers not just as things to be used to solve equations or calculations, but as objects that can possess different properties. Exploring such concepts will set the direction of her future academic career.
Catherine’s early years immerses the reader in the life of a rural Irish village, introducing some fascinating characters. As in the author’s previous book, The Geometer Lobachevsky, many of these possess obsessional traits. Austin, a local photographer, dreams of building a golf course (as it happens on the land currently owned by Catherine’s family) and has spent time drawing a design in meticulous detail, including calculations of degree of difficulty based on each hole’s topography, length and the effect of prevailing winds. It’s sight of this map that first prompts Catherine’s thoughts about the properties of numbers.
The descending strand takes place thirty years later and focuses on Catherine’s former university mentor, Dr. Josef Alois, as he lives out what we know to be the final weeks of his life in a house he built himself in a remote part of Scotland. ‘This man is more unwell than he believes and will perish in one month and eleven days.’ Alois’s story is one of mental and physical decline whereas Catherine’s story has been of intellectual progress and achievement.
Their relationship is based on shared intellectual curiosity about subjects such as mathematical probability, philosophy, logic and linguistics. Also by the nights they spent together in air raid shelters during the Blitz. Briefly perhaps there was the possibility their relationship may have moved beyond friendship, on Catherine’s part at least. For Alois, it’s more a case of admiration for Catherine’s exceptional intellect. Their bond remains strong enough that Catherine travels to Alois’s home to care for him through his illness. There are moving moments as Alois becomes frailer and less and less able to communicate his wishes clearly. The remote location of the house means there’s a claustrophobic feel to this strand of the story.
Catherine is a mathematical prodigy. I am not. This is where I struggled because many of the mathematical concepts went over my head and I found myself skipping sections that were just too abstruse. I think this prevented me forming a stronger connection with the story. Although I admired the wonderful writing, I was left with the feeling I was not quite clever enough to appreciate everything the author was trying to convey.
August 31, 2026
The writing was good, the morals: not so much
September 18, 2026
amazing as always! i love the mathematical imagery and the two-parts-of-a-whole formatting; duncan has a very unique way of conveying emotion and feeling. the eventual realisation of the title was so perfect, i got goosebumps!
August 16, 2026
more maths - not on purpose!! - v v much enjoyed, fav of his so far
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August 17, 2026pretty humbled to be the second review on here...dope book
Displaying 1 - 5 of 5 reviews