“But what can I do—as an individual? The day is long past when a single man, like Caesar or Alexander, could bring about world-shaking changes.”

“True—but not true,” Ihjel said. “There are key men in every conflict of forces, men who act like catalysts applied at the right instant to start a chemical reaction. You might be one of these men, but I must be honest and say that I can’t prove it yet. So in order to save time and endless discussion, I think I will have to spark your personal sense of obligation.”

“Obligation to whom?”

“To mankind, of course, to the countless billions of dead who kept the whole machine rolling along that allows you the full, long and happy life you enjoy today. What they gave to you, you must pass on to others. This is the keystone of humanistic morals.”

“Agreed. And a very good argument in the long run. But not one that is going to tempt me out of this bed within the next three hours.”

“A point of success,” Ihjel said. “You agree with the general argument. Now I apply it specifically to you. Here is the statement I intend to prove. There exists a planet with a population of seven million people. Unless I can prevent it, this planet will be completely destroyed. It is my job to stop that destruction, so that is where I am going now. I won’t be able to do the job alone. In addition to others, I need you. Not anyone like you—but you, and you alone.”

“You have precious little time left to convince me of all that,” Brion told him, “so let me make the job easier for you. The work you do, this planet, the imminent danger of the people there—these are all facts that you can undoubtedly supply. I’ll take a chance that this whole thing is not a colossal bluff, and admit that given time, you could verify them all. This brings the argument back to me again. How can you possibly prove that I am the only person in the galaxy who can help you?”