Toni Morrison? Benjamin Disraeli? Mickey Spillane? C. S. Lewis? J. R. R. Tolkien? Janet Fitch? Ann Patchett? Apocryphal? Dear Quote Investigator: The prominent American editor, writer, and educator Toni Morrison who authored the Pulitzer Prize-winning novel “Beloved” has been credited with an exhilarating remark about the creative process: If there’s a book you really want …