"Why did you come out here, Walden?"

"To see you. I came today, when I realized how suspicious the council had grown. I was going to warn you, to tell you to keep away from the hills, that they wanted an excuse to lock you up. I was too late."

"I was careless, Walden." He felt guilt twist inside of him.

"No. You didn't know the danger. I should have warned you sooner. But I never dreamed you would find anyone in the hills, Eric. I never dreamed there were any more without perception, this generation."

Eric moved nearer the car and leaned against it, the cold plastic next to his body cooling him a little, steadying him against the feverish trembling that shook his legs and sent sweat down over him and made him too weak, suddenly, to want to struggle further.

"Let me go, Walden. Let me take the car and go."

Walden didn't move. He stood quietly, a tall thin shape in the darkness.

"There are other people the searchers didn't find, aren't there? And you're going to them."

Eric didn't answer. He looked past Walden, at the car, wishing he could somehow call to Lisa, wishing they could perceive so that he could rea.s.sure her and promise her that somehow he'd still take her to freedom. But it would be an empty promise....

"I've warned you too late. You've found your people, but it won't do you any good. They'll hunt you through the hills, and I won't be able to help you any more."

Eric looked back at him, hearing the sadness in his voice. It was real sadness, real emotion. He thought of the years he had spent with Walden, learning, absorbing the old race knowledge, and he remembered that all through those years Walden had never once made him feel uncomfortable because of the difference between them.

He looked at the old man for a long time, wishing that it was day so he could read the other's expression, wondering how he had managed to take this man for granted for so long.

"Why?" he whispered. "Why are you helping me? Why aren't you like the others?"

"I never had a son, Eric. Perhaps that's the reason."

Eric thought of Myron and shook his head. "No, it isn't that. My father doesn't feel the way you do. He can't forget that I'm not normal. With him, I'm always aware of the difference."

"And you're not with me?"

"No," Eric said. "I'm not. Why?" And he wondered why he had never asked that question before.

"The final question," Walden said softly. "I wondered how long it would be before you asked it. I wondered if you'd ever ask it.

"Haven't you ever thought about why I never married, Eric? Haven't you ever asked yourself why I alone learned to read, and collected books, and studied the old race?"

"No," Eric admitted. "I just accepted you."

"Even though I can perceive and you can't." Walden paused and Eric waited, not knowing what was coming and yet sure that nothing could surprise him now.

"My father was normal," Walden said slowly. "But I never saw him. My mother was like you. So was my brother. We lived in the hills and I was the only one who could perceive. I learned what it was to be different."

Eric stared. He couldn't stop staring. And yet he should have realized, long ago, that Walden was different too, in his own way.

Walden smiled back, his face, shadowed in moonlight, as quiet and as understanding as ever. For a moment neither spoke, and there was only the faraway sound of crickets chirping and the rustling of the wind in the gardens.

And then, from within the aircar, there was a different rustling, that of a person moving.

"Lisa!"

Eric pushed the compartment panel back. The soft light came on automatically, framing her where she curled against the far wall.

"You heard us?"

She nodded. Tears had dried on her cheeks. Her eyes were huge in her thin face.

"We'd better go, Lisa."

He reached in to help her out.

They didn't see the aircar dropping in for a landing until it was almost upon them, until its lights arced down over the museum walls.

"Hide, Eric. In here--" Lisa pulled him forward.

Behind them, Walden's voice, suddenly tired in the darkness. "It's too late. They know I'm here. And they're wondering why."

The three of them stood frozen, watching each other, while the dark shape of the car settled to the ground some thirty yards away.

"It's Abbot," Walden said. He paused, intent for a moment, and added, "He doesn't know about you. Get out of sight somewhere, both of you, away from here--"

"Come on, Lisa--" Eric swung away from the car, toward the shelter of the building and whatever hiding place there might be. "Hurry!"

They ran, and the museum rose in front of them, and the door was open.

They were through it and into the dim corridor, and there was no one around; Walden's figure was lost in the night outside. Beyond the libraries the great ramp spiraled downward.

"This way, Lisa!"

They came out into the bottom of the well and there in front of them the starship rested. Still reaching upward. Still waiting, as it had waited for so many uncounted years.

Their ship--if only it could be their ship....

"Oh, Eric!"

Side by side they stood staring at it, and Eric wished that they could get into it and go, right now, while they were still free and there was no one to stop them. But they couldn't. There was no food in the ship, no plant tanks, none of the many provisions the books listed.

Besides, if they took off now they would destroy the museum and all the people in it, and probably kill themselves as well.

"Eric! We know you're down there!" It wasn't Walden's voice.

Lisa moved closer. Eric put his arm around her and held her while footsteps hurried toward them down the ramp. The council. Abbot and Drew and the others. Prior, shaking his head. Walden.

"Let us go," Eric cried. "Why won't you let us go?"

Walden turned to the others. His eyes pleaded with them. His lips moved and his hands were expressive, gesturing. But the others stood without moving, without expression.

Then Abbot pushed Walden aside and started forward, his face hard and determined and unchangeable.