Laurent Cohen is a neuroscientist specializing in the study of memory. His book provides answers to complex questions about the functioning of our brains with light humor, and every scientific theory becomes an interesting story. What keeps our brains working from the very first day of our lives? What happens in our heads when we sleep? Many phenomena, interesting observations and deep conclusions about the work of our brain are collected in this book, which will be of interest to anyone who thinks about how he thinks.