This book is truly a masterpiece. Throughout the chapters (built around prime numbers, so one does not have Chapter 1 then 2 then 3 ...), we discover how the brain of little character, autistic extremely touching and intriguing. At times, his arguments are so glaring truth that one comes to wonder if we are not all in the wrong, and that he alone holds the supreme truth. His reasons for not liking the yellow and brown stand, one comes to question his own normality, to finally arrive at a beautiful lesson of tolerance and openness. Touching, funny, interesting, this book is therefore advisable to adults and children, it can qu'accrocher the reader's eye and delight the.