In the midst of his labors, harassed and tried in all ways, he was assailed as usual by complaint and criticism. Some of it came to him through his friend and aide, Joseph Reed, to whom he wrote in reply one of the noblest letters ever penned by a great man struggling with adverse circumstances and wringing victory from grudging fortune. He said that he was always ready to welcome criticism, hear advice, and learn the opinion of the world. "For as I have but one capital object in view, I could wish to make my conduct coincide with the wishes of mankind, as far as I can consistently; I mean, without departing from that great line of duty which, though hid under a cloud for some time, from a peculiarity of circumstances, may, nevertheless, bear a scrutiny." Thus he held fast to "the great line of duty," though bitterly tried the while by the news from Canada, where brilliant beginnings were coming to dismal endings, and cheered only by the arrival of his wife, who drove up one day in her coach and four, with the horses ridden by black postilions in scarlet and white liveries, much to the amazement, no doubt, of the sober-minded New England folk. Light, however, finally began to break on the work about him. Henry Knox, sent out for that purpose, returned safely with the guns captured at Ticonderoga, and thus heavy ordnance and gunpowder were obtained. By the middle of February the harbor was frozen over, and Washington arranged to cross the ice and carry Boston by storm. Again he was held back by his council, but this time he could not be stopped. If he could not cross the ice he would go by land. He had been slowly but surely advancing his works all winter, and now he determined on a decisive stroke. On the evening of Monday, March 4, under cover of a heavy bombardment which distracted the enemy's attention, he marched a large body of troops to Dorchester Heights and began to throw up redoubts. The work went forward rapidly, and Washington rode about all night encouraging the men. The New England soldiers had sorely tried his temper, and there were many severe attacks and bitter criticisms upon them in his letters, which were suppressed or smoothed over for the most part by Mr. Sparks, but which have come to light since, as is sometimes the case with facts. Gradually, however, the General had come to know his soldiers better, and six months later he wrote to Lund Washington, praising his northern troops in the highest terms. Even now he understood them as never before, and as he watched them on that raw March night, working with the energy and quick intelligence of their race, he probably felt that the defects were superficial, but the virtues, the tenacity, and the courage were lasting and strong.