Mr. Astor remained in active business for fifty years. During that entire period he scarcely committed an error of judgment which led to a loss in business. He was thorough master of every thing pertaining to his affairs, and his strength and accuracy of judgment was remarkable. The particulars of his transactions were indelibly impressed upon his mind. His intellect was vigorous and quick, and he grasped a subject with a readiness which seemed like intuition. He was always careful of the present, but he loved to undertake enterprises which extended far into the future. He was a man of the utmost punctuality in all his habits. He rose early, and, until he was fifty-five years old, was always in his office before seven o'clock. His capacity for work was very great, so that, in spite of his heavy labors, he was always able to leave his office by two o'clock, while many of his associates, who really did less than he, were compelled to remain in their counting-rooms until four or five. He was noted for his unvarying calmness, which he doubtless owed to his German temperament. In the midst of disaster and loss he was cooler and more cheerful than ever. To those who chafed at their troubles, he would say, smilingly, "Keep quiet; keep cool." This was his safeguard.
He was a devoted citizen of the United States, and, though he took no active interest in politics, was a steady supporter of the Whig party. Henry Clay was his personal friend, and his last donation to any political cause was a subscription of fifteen hundred dollars to aid the election of his old friend to the Presidency.
About the year 1830, Mr. Astor, now the possessor of millions, began to withdraw from active business, confining his efforts chiefly to such investments as the management of his immense estate made necessary.