"... Rockefeller was capable of extraordinary ferocity in compelling submission from competitors. He might starve out obdurate firms by buying all available barrels on the market or monopolize local tank cars to paralyze their operations. Yet Rockefeller didn't apply this pressure lightly and preferred patience and reason—if possible—to terror. He was not only purchasing refineries but assembling a managerial team. The creation of Standard Oil was often less a matter of stamping out competitors than of seducing them into cooperation. In general, Rockefeller was so eager to retain original management that he accumulated expensive deadwood on the payroll and, for the sake of intraempire harmony, preferred to be conciliatory."