Although commonly called a novel, The Scarlet Letter is actually a romance. Hawthorne makes this distinction because at the time he was writing, novels were supposed to deal with realistic representations of human experiences or external truths. Romances, on the other hand, were concerned with internal truths, or "truths of the human heart," as Hawthorne states in his Preface to The House of the Seven Gables. Romances, therefore, allowed the author to deviate from reality in favor of imagination. Thus The Scarlet Letter is not an historical novel about Puritan Boston, but a romance set 200 years before Hawthorne's time in which he tells a tale that may have occurred, given some historical facts and many insights into human nature.