‘A stirring scientific journey, a celebration of human diversity and a call to rethink the “unthinkable.”’ - Nature
“A window into neurological research that’s not just about other people’s brains, but also our own.” - Popular Science
“A great science writer knows what is interesting to the reader, and here Thomson shines. Her book is tailor-made for anyone who loves intellectual brain trivia. This book is a chef’s tasting menu of fascinating things about your brain.” - The Washington Post
“We are the sum of our brains—nothing more or less. Helen Thomson ably guides us through the fascinating world of what are indeed some of the strangest brains on earth, showing us what we can learn about ourselves.  Scientifically accurate and wholly accessible, this is an irresistible book.” - Robert Sapolsky, author of Behave: The Biology of Humans at Our Best and Worst
“May change your perception of what it means to be human.” - Library Journal (starred review)
“Splendid for Mary Roach fans.” - Booklist
“A user-friendly tour of the brain and the curious things that go on inside of it.” - Kirkus
“This wonderfully clear, fluent, eye-opening book explores what happens when the mind misbehaves: distance is distorted, memory plays tricks, people hear in colour and see in music. Helen Thomson is the science teacher you wish you’d had at school . . . Unthinkable [is] fascinating.” - The Times (London)
“From seeing auras ... to waking up ‘dead’ and being able to remember every single day of your life in vivid detail, award-winning science journalist Thomson investigates wondrously rare and strange brain disorders in this terrific debut . . . Theirs are mystery stories, spellbinding and true.” - The Bookseller, Editor’s Choice
“With flair and empathy, the author sees her subjects in the context of their everyday lives, allowing us to marvel at their humanity . . . This is neuroscience for the general reader: accessible, well researched, thought-provoking.” - Tatler
“Thomson has a gift for making the complex and strange understandable and relatable. Oliver Sacks is noted as an inspiration and, indeed, this book will appeal to his many fans.” - Library Journal (starred review)
“A book that will please fans of the late Oliver Sacks.” - Publishers Weekly
“Remarkable—an astonishing tour of the human brain in all its awesome power and bewildering variation. In beautiful prose, Thompson seamlessly dances between conversations with nine extraordinary people, and beautiful explanations of how the brain works. Unthinkable will enrich your brain, blow your mind, and warm your heart.” - Ed Yong, author of I Contain Multitudes