Hans Keilson is a Jewish German/Dutch novelist, poet, psychoanalyst, and child psychologist who wrote about traumas relating to what happened in Europe during WWII. In particular, he worked with traumatized orphans. Some of his novels deal with the same time period, though his first one was published in 1934. He was also active in the Dutch Resistance. Francine Prose has called him one of "the world's very greatest writers."