"A powerful and beautiful book... Deals with one of the darkest chapters of history in a sensitive way as he experiences both human cruelty and kindness along the way... A deeply moving contribution to Holocaust literature for children, in which the world is seen through a very unusual pair of eyes. Otto is an endearing character that children (and adults) will warm to."Outside In
"Maurice Sendak, a friend of Ungerer's, thought him the most original children's book writer of his time."Sunday Telegraph
"So strong and graphically interesting...; It's art illustration at the highest level."The Times
"[A] style marked by great originality of illustrative technique, and a use of language that refused to patronise his young readers."Dazed & Confused
"A powerful classic being published in English for the first time... Inspiring."Junior
"Delightful and artistically nourishing."New York Times
"Watch the children, the subversive is back."New York Times