Washington called his success in the attack at Trenton a lucky stroke. It was luck which had far-reaching consequences. Howe had the fixed idea that to follow the capture of New York by that of Philadelphia, the most populous city in America, and the seat of Congress, would mean great glory for himself and a crushing blow to the American cause. If to this could be added, as he intended, the occupation of the whole valley of the Hudson, the year 1777 might well see the end of the war. An acute sense of the value of time is vital in war. Promptness, the quick surprise of the enemy, was perhaps the chief military virtue of Washington; dilatoriness was the destructive vice of Howe. He had so little contempt for his foe that he practised a blighting caution. On April 12, 1777, Washington, in view of his own depleted force, in a state of half famine, wrote: "If Howe does not take advantage of our weak state he is very unfit for his trust." Howe remained inactive and time, thus despised, worked its due revenge. Later Howe did move, and with skill, but he missed the rapid combination in action which was the first condition of final success. He could have captured Philadelphia in May. He took the city, but not until September, when to hold it had become a liability and not an asset. To go there at all was perhaps unwise; to go in September was for him a tragic mistake. From New York to Philadelphia the distance by land is about a hundred miles. The route lay across New Jersey, that "garden of America" which English travelers spoke of as resembling their own highly cultivated land. Washington had his headquarters at Morristown, in northern New Jersey. His resources were at a low ebb. He had always the faith that a cause founded on justice could not fail; but his letters at this time are full of depressing anxiety. Each State regarded itself as in danger and made care of its own interests its chief concern. By this time Congress had lost most of the able men who had given it dignity and authority. Like Howe it had slight sense of the value of time and imagined that tomorrow was as good as today. Wellington once complained that, though in supreme command, he had not authority to appoint even a corporal. Washington was hampered both by Congress and by the State Governments in choosing leaders. He had some officers, such as Greene, Knox, and Benedict Arnold, whom he trusted. Others, like Gates and Conway, were ceaseless intriguers. To General Sullivan, who fancied himself constantly slighted and ill-treated, Washington wrote sharply to abolish his poisonous suspicions.