To the Editor:— Allow me to send to you for publication inThe Journalan English translation of Ten Commandments of the Surgeon, the author of which is Dr. Alfonso Bonilla Naar, professor of clinical surgery, National Faculty of Medicine, Bogota, Colombia. The Ten Commandments of the Surgeon (to Lord Moynihan) I Silence adds dignity to the operating room; it is a tribute to the patient who willingly entrusts his life in the hands of the surgeon. II Operating should always be a conscious act in which safety subordinates time. III Equal hazard may come from a very rapid or slow technique; guide your speed in the interest of efficiency. IV Courage well seasoned with prudence widens the boundaries of success. V Often it takes no less courage for a prompt as a delayed decision to operate. VI Surgery has been made safe for the patient; we must now