“There is only one motive for writing a novel: to be published and read. To me there is no distinction between the mystery novel and the novel, only between good books and bad books. A good book takes the reader into a new world of experience; it is an experiment. A bad book, unless the writing is inept, reinforces the intransigent attitude of the reader not to experiment with a new world. Since there are criminals and psychopaths and sociopaths in all my novels they are in a way psychological thrillers.”