Anne-Sophie Chilard is the editor-in-chief of the children's magazine J'aime lire. She is the co-author of several books of activities and recipes for children, and lives in Paris. Jean-Charles Pettier taught philosophy in high school, and is now a doctoral candidate in philosphy. He introduces the subject to young children through a column in the children's magazine, Pomme d'api, He lives near Paris. Pascal Lemaitre is the illustrator of the numerous children's books, including the bestselling picture books, Come with Me, Do Not Open This Book!, and many more. During the year, he splits his time between Brussels, Belgium, and Brooklyn, New York.