This time he had no robot to help him, and he did not know what the outcome would be. But he no longer had any fear of these foolish old men who thought themselves the rulers of Diaspar. He had seen the real rulers of the city, and had spoken to them in the grave silence of their brilliant, buried world. So in his anger and arrogance, Alvin threw away his disguise and the councillors looked in vain for the artless boy who had addressed them a little while ago.

“Why are you going to close the way to Lys?”

There was silence in the Council Room, but the lips of Jeserac twisted into a slow, secret smile. This Alvin was new to him, but it was less alien than the one who had spoken before.

The President chose at first to ignore the challenge. Perhaps he could not bring himself to believe that it was more than an innocent question, however violently it had been expressed.

“That is a matter of high policy which we cannot discuss here,” he said pompously, “but Diaspar cannot risk contamination with other cultures.” He gave Alvin a benevolent but slightly worried smile.

“It’s rather strange,” said Alvin coldly, “that in Lys I was told exactly the same thing about Diaspar.” He was glad to see the start of annoyance, but gave his audience no time to reply.

“Lys,” he continued, “is much larger than Diaspar and its culture is certainly not inferior. It’s always known about us but has chosen not to reveal itself-as you put it, to avoid contamination. Isn’t it obvious that we are both wrong?”

He looked expectantly along the lines of faces, but nowhere was there any understanding of his words. Suddenly his anger against these leaden-eyed old men rose to a crescendo. The blood was throbbing in his cheeks, and though his voice was steadier now it held a note of icy contempt which even the most pacific of the councillors could no longer overlook.

“Our ancestors,” began Alvin, “built an empire which reached to the stars. Men came and went at will among all those worlds-and now their descendants are afraid to stir beyond the walls of their city. Shall I tell you why?” He paused: there was no movement at all in the great bare room.

“It is because we are afraid-afraid of something that happened at the beginning of history. I was told the truth in Lys, though I had guessed it long ago. Must we always hide like cowards in Diaspar, pretending that nothing else exists-because half a billion years ago the Invaders drove us back to Earth?”