“If reason be judge, no writer has produced such inconsistent characters as nature herself has. It must call for no small sagacity in a reader unerringly to discriminate in a novel between the inconsistencies of conception and those of life. As elsewhere, experience is the only guide here; but as no one man’s experience can be coextensive with what is, it may be unwise in every case to rest upon it.”

“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.”

“Reading is, at its best, not an escape; it is genuine experience. A novel is not a monologue, but a conversation, a collaboration between writer and reader, an invaluable exchange of human conditions.”

“Writing a story or a novel is one way of discovering sequence in experience, of stumbling upon cause and effect in the happenings of a writer's own life.”

“The flimsy little protestations that mark the front gate of every novel, the solemn statements that any resemblance to real persons living or dead is entirely coincidental, are fraudulent every time. A writer has no other material to make his people from than the people of his experience ... The only thing the writer can do is to recombine parts, suppress some characterisitics and emphasize others, put two or three people into one fictional character, and pray the real-life prototypes won't sue.”

“Experience has thought me that there is only one short step between Love and Hate, as there is between Life and Death.”