"To me, that can only mean that you have another ace up your sleeve. You _know_ we're going to get the Nipe fairly quickly. You either have a sure way of tracing him, or you already know where he is. "Which is it?" Colonel Mannheim sighed. "We know where he is," he said. "We have known for six years." _[6]_ The Nipe prowled around the huge underground room, carefully checking his alarms. If anyone entered the network of tunnels at any point, the instruments would register that fact. They had to be adjusted, of course, for the presence of the small, omnivorous quadrupeds that ran through the tunnels in such numbers, but anything larger than they would be noted immediately. He did not like to leave this place. Here, over a period of ten revolutions of this planet about its primary, he had built himself a nest that was almost comfortable. Here, too, were his workshops and his storehouses. He had reason to believe that he was safe here, screened and protected as he was, but each time he left or entered he ran the chance of being observed. Still, there was no help for it. Thus far, he had been hampered by technical problems. There were things he needed that he could not make for himself. Even his own vast memory, with its every bit of information instantly available, could only contain what had been acquired over a lifetime, and even his long life had not been long enough to acquire every bit of knowledge he needed. His work had been long and tedious. There were many things that could neither be made in his workshops nor obtained from the natives, things he did not know how to make and which the local species had not yet evolved in their own technology. Or, more likely, which had not been allowed them. In such cases, he had had to make do with other, lesser techniques, which added to the complexity of his job. But now another problem had intruded itself into his schedule. He had a name. Colonel Walther Mannheim. The meaning of the verbal symbolism was unknown to him. The patterns of the symbolism were even more evasive than the patterns of the language itself. "Colonel" seemed simple enough. It indicated a certain sociomilitary class that was rigidly defined in one way and very hazy in another. But the meanings and relationships of both "Walther" and "Mannheim" were beyond him. What difference, for instance, was there between a "Walther" and a "William"? Did a "Mannheim" outrank a "Mandeville", or the other way around? What functions differentiated a "John Smith" from a "Peter Taylor"? He knew what a "john" was and what a "smith" was, but "John Smith" was not, apparently, necessarily associated with sanitary plumbing. The meaning of some other names eluded him entirely. But that made little difference at the moment. The meaning of Colonel Walther Mannheim's symbolic nomenclature was secondary in comparison with his known function. That required that the Nipe must eventually find and confront Colonel Walther Mannheim.