Carried away by his ambition, he actually plotted open rebellion against Spain and to make himself emperor of Mexico. The Crown got wind of this precious plan, and sent out emissaries who seized his goods, imprisoned his men, and prepared to thwart his secret schemes. Cortez boldly hastened to Spain, where he met his sovereign with great splendor. Charles received him well, and decorated him with the illustrious Order of Santiago, the patron saint of Spain. But his star was already declining; and though he was allowed to return to Mexico with undiminished outward power, he was thenceforth watched, and did nothing more that was comparable with his wonderful earlier achievements. He had become too unscrupulous, too vindictive, and too unsafe to be left in authority; and after a few years the Crown was forced to appoint a viceroy to wield the civil power of Mexico, leaving to Cortez only the military command, and permission for further conquests. In 1536 Cortez discovered Lower California, and explored part of its gulf. At last, disgusted with his inferior position where he had once been supreme, he returned to Spain, where the emperor received him coldly. In 1541 he accompanied his sovereign to Algiers as an attache, and in the wars there acquitted himself well. Soon after their return to Spain, however, he found himself neglected. It is said that one day when Charles was riding in state, Cortez forced his way to the royal carriage and mounted upon the step determined to force recognition. "Who are you?" demanded the angry emperor. "A man, your Highness," retorted the haughty conqueror of Mexico, "who has given you more _provinces_ than your forefathers left you _cities_!" Whether the story is true or not, it graphically illustrates the arrogance as well as the services of Cortez. He lacked the modest balance of the greatest greatness, just as Columbus had lacked it. The self-assertion of either would have been impossible to the greater man than either,--the self-possessed Pizarro. At last, in disgust, Cortez retired from court; and on the 2d of December, 1554, the man who had first opened the interior of America to the world died near Seville. There were some in South America whose achievements were as wondrous as those of Cortez in Mexico. The conquest of the two continents was practically contemporaneous, and equally marked by the highest military genius, the most dauntless courage, the overcoming of dangers which were appalling, and hardships which were wellnigh superhuman.