“Nowhere is there anything just like them. In his best work—and his tales of the great metropolis are his best—he is unique. The soul of his art is unexpectedness. Humor at every turn there is, and sentiment and philosophy and surprise. One never may be sure of himself. The end is always a sensation. No foresight may predict it, and the sensation always is genuine. Whatever else O. Henry was, he was an artist, a master of plot and diction, a genuine humorist, and a philosopher. His weakness lay in the very nature of his art. He was an entertainer bent only on amusing and surprising his reader. Everywhere brilliancy, but too often it is joined to cheapness; art, yet art merging swiftly into caricature. Like Harte, he cannot be trusted. Both writers on the whole may be said to have lowered the standards of American literature, since both worked in the surface of life with theatric intent and always without moral background, O. Henry moves, but he never lifts. All is fortissimo; he slaps the reader on the back and laughs loudly as if he were in a bar-room. His characters, with few exceptions, are extremes, caricatures. Even his shop girls, in the limning of whom he did his best work, are not really individuals; rather are they types, symbols. His work was literary vaudeville, brilliant, highly amusing, and yet vaudeville.”[9] _The Duplicity of Hargraves_, the story by O. Henry given in this volume, is free from most of his defects. It has a blend of humor and pathos that puts it on a plane of universal appeal.