Fate had placed Rockefeller in Cleveland in the days when the oil business had got well under way. In the early sixties a score or so of refineries had started in this town, many of which were making large profits. It is not surprising that Rockefeller, gazing at these black and evil-smelling buildings from the vantage point of his commission office, should have felt an impulse to join in the gamble. He plunged into this new activity at the age of twenty-three. He possessed two great advantages over most of his adventurous competitors; one was a heavy bank account, representing his earnings in the commission business, and the other a partner, Samuel Andrews, who was generally regarded as a mechanical genius in the production of illuminating oil. At the beginning, therefore, Rockefeller had the two essentials which largely explain his subsequent career; an adequate liquid capital and high technical resources. In the first few years the Rockefeller houses--he rapidly organized three, one after another--competed with a large number of other units in the oil business on somewhat more than even terms. At this time Rockefeller was merely one of a large number of successful oil refiners, yet during these early days a grandiose scheme was taking shape in that quiet, insinuating, far-reaching brain. He said nothing about it, even to his closest associates, yet it filled his every waking hour. For this young man was taking a comprehensive sweep of the world and he saw millions of people, in the Americas, in Europe, and in Asia, whose need for the article in which he dealt would grow more insistent every day. He saw that he was handling a product which was becoming as much a necessity of life as the air itself. The young man reached out to grasp this business. "All of it," we can picture Rockefeller saying to himself, "all of it shall be mine." Any study of Rockefeller's career must lead to the conclusion that, before he had reached his thirtieth year, he had determined to monopolize this growing necessity. The mere fact that this young man could form such a stupendous plan indicates that in him we are meeting for the first time a new type of industrial leader. At that time monopolies were unknown in the United States. That certain old English Kings had frequently granted exclusive trading privileges to favored merchants most educated Americans knew; and their knowledge of monopolies extended little further than this. Yet about 1868 John D. Rockefeller started consciously to revive this ancient practice, and to bring under one ownership the magnificent industry to which Drake's sensational discovery had given rise.