His short experience of soldiering, gave him, as has been said, a horror of war, and against this scourge he preached with untiring zeal. In 1814, he gave vent to his whole soul, in a remarkable tract, “A Solemn Review of the Custom of War,” one of the most successful and efficient pamphlets of any period. It has been translated into many languages, and circulated extensively through the world. It is one of the chief instruments by which the opinions of society have been affected within the present century. The season of its publication was favorable; the world was wearied with battles, and longed for rest. “Such was the impression made by this work,” says Dr. Channing, “that a new association, called the ‘Peace Society of Massachusetts,’ was instituted in this place [Brighton, Massachusetts, whither he had removed in 1813]. I well recollect the day of its formation in yonder house, then the parsonage of this parish; and if there was a happy man that day on earth, it was the founder of this institution. This society gave birth to all the kindred ones in this country, and its influence was felt abroad.” He conducted its periodical, which was commenced in 1819, and was published quarterly for ten years. It was almost entirely written by himself, and is remarkable not only for its beautiful moral tone, but for fertility of resource and ingenuity of illustration. He wished it to be inscribed on his tombstone: “He wrote the Friend of Peace.” Eight years after he began to write the “Solemn Review,” he declares his belief that the subject of war had not been absent from his mind, when awake, an hour at a time, during that whole period. This concentration of all the powers of an earnest and vigorous mind, enabled him to produce a greater effect than perhaps any other individual. Dr. Worcester died in 1837, in the seventy-ninth year of his age. Of character Dr. Channing thus speaks:-- “Two views of him particularly impressed me. The first was the unity, the harmony of his character. He had no jarring elements. His whole nature had been blended and melted into one strong, serene love. His mission was to preach peace, and he preached it, not on set occasions, or by separate efforts, but in his whole life.... And this serenity was not the result of torpor or tameness, for his whole life was a conflict with what he deemed error. He made no compromise with the world; and yet he loved it as deeply and as constantly as if it had responded in shouts to all his views and feelings.