“I’ll never remember all that.”

“Yes, you will. And I’ll be right at your side to help. And if you do fall and I don’t catch you, don’t try to do anything. Just relax and let yourself tumble or slide. There are no boulders anywhere that you can collide with.”

Denison swallowed and looked ahead. The southward slide was gleaming in Earthlight. Minute unevenness caught more than their share of light, leaving tiny uphill patches in darkness so that there was a vague mottling of the surface. The bulging half-circle of Earth rode the black sky almost directly ahead.

“Ready?” said Selene. Her gauntleted hand was between his shoulders.

“Ready,” said Denison faintly.

“Then off you go,” she said. She pushed and Denison felt himself begin to move. He moved quite slowly at first. He turned toward her, wobbling, and she said, “Don’t worry. I’m right at your side.”

He could feel the ground beneath his feet—and then he couldn’t. The glider had been activated.

For a moment he felt as though he were standing still. There was no push of air against his body, no feel of anything sliding past his feet. But when he turned toward Selene again, he noticed that the lights and shadows to one side were moving backward at a slowly increasing speed.

“Keep your eyes on the Earth,” Selene’s voice said in his ear, “till you build up speed. The faster you go, the more stable you’ll be. Keep your knees bent... You’re doing very well, Ben.”

“For an Immie,” gasped Denison. “How does it feel?”

“Like flying,” he said. The pattern of light and dark on either side was moving backward in a blur. He looked briefly to one side, then the other, trying to convert the sensation of a backward flight of the surroundings into one of a forward flight of his own. Then, as soon as he succeeded, he found he had to look forward hastily at the Earth to regain his sense of balance. “I suppose that’s not a good comparison to use to you. You have no experience of flying on the Moon.”

“Now I know, though. Flying must be like gliding—I know what that is.”

She was keeping up with him easily.

Denison was going fast enough now so that he got the sensation of motion even when he looked ahead. The Moonscape ahead was opening before him and flowing past on either side. He said, “How fast do you get to go in a glide?”

“A good Moon-race,” said Selene, “has been clocked at speeds in excess of a hundred miles an hour—on steeper slopes than this one, of course. You’ll probably reach a top of thirty-five.”

“It feels a lot faster than that somehow.”

“Well, it isn’t. We’re leveling off now, Ben, and you haven’t fallen. Now just hang on; the glider will die off and you’ll feel friction. Don’t do anything to help it. Just keep going.”

Selene had barely completed her remarks when Denison felt the beginning of pressure under his boots. There was at once an overwhelming sensation of speed and he clenched his fists hard to keep from throwing his arms up in an almost reflex gesture against the collision that wasn’t going to happen. He knew that if he threw up his arms, he would go over backward.

He narrowed his eyes, held his breath till he thought his lungs would explode, and then Selene said, “Perfect, Ben, perfect. I’ve never known an Immie to go through his first slide without a fall, so if you do fall, there’ll be nothing wrong. No disgrace.”

“I don’t intend to fall,” whispered Denison. He caught a large, ragged breath, and opened his eyes wide. The Earth was as serene as ever, as uncaring. He was moving more slowly now—more slowly—more slowly—

“Am I standing still now, Selene?” he asked. “I’m not sure.”

“You’re standing still. Now don’t move. You’ve got to rest before we make the trip back to town.... Damn it, I left it somewhere around here when we came up.”

Denison watched her with disbelief. She had climbed up with him, had glided down with him. Yet he was half-dead with weariness and tension, and she was in the air with long kangaroo-leaps. She seemed a hundred yards away when she said, “Here it is!” and her voice was as loud in his ears as when she was next to him.

She was back in a moment, with a folded, paunchy sheet of plastic under her arm.

“Remember,” she said, cheerily, “when you asked what it was on our way up and I said we’d be using it before we came down?” She unfolded it and spread it on the dusty surface of the Moon.

“A Lunar Lounge is its full name,” she said, “but we just call it a lounge. We take the adjective for granted here on this world.” She inserted a cartridge and tripped a lever.

It began to fill. Somehow Denison had expected a hissing noise, but of course there was no air to carry sound.

“Before you question our conservation policies again,” said Selene, “this is argon also.”

It blossomed into a mattress on six, stubby legs, “It will hold you,” she said. “It makes very little actual contact with the ground and the vacuum all around will conserve its heat.”

“Don’t tell me it’s hot,” said Denison, amazed.

“The argon is heated as it pours in, but only relatively. It ends up at 270 degrees absolute, almost warm enough to melt ice, and quite warm enough to keep your insulated suit from losing heat faster than you can manufacture it. Go ahead. Lie down.”

Denison did so, with a sensation of enormous luxury.

“Great!” he said with a long sigh.

“Mamma Selene thinks of everything,” she said.

She came from behind him now, gliding around him, her feet placed heel to heel as though she were on skates, and then let them fly out from under her, as she came down gracefully on hip and elbow on the ground just beside him.

Denison whistled. “How did you do that?”

“Lots of practice! And don’t you try it. You’ll break your elbow. I warn you though. If I get too cold, I’m going to have to crowd you on the lounge.”

“Safe enough,” he said, “with both of us in suits.”

“Ah, there speaks my brave lecher.... How do you feel?”

“All right, I guess. What an experience!”

“What an experience? You set a record for non-falls. Do you mind if I tell the folks back in town about this?”

“No. Always like to be appreciated.... You’re not going to expect me to do this again, are you?”

“Right now? Of course not I wouldn’t myself. Well just rest awhile, make sure your heart action is back to normal, and then we’ll go back. If you’ll reach your legs in my direction, I’ll take your gliders off. Next time, I’ll show you how to handle the gliders yourself.”

“I’m not sure that there will be a next time.”

“Of course there’ll be. Didn’t you enjoy it?”

“A little. In between terror.”

“You’ll have less terror next time, and still less the time after, and eventually you’ll just experience the enjoyment and I’ll make a racer out of you.”

“No, you won’t. I’m too old.”

“Not on the Moon. You just look old.”

Denison could feel the ultimate quiet of the Moon soaking into him as he lay there. He was facing the Earth this time. Its steady presence in the sky had, more than anything else, given him the sensation of stability during his recent glide and he felt grateful to it.

He said, “Do you often come out here, Selene? I mean, by yourself, or just one or two others? You know, when it isn’t fiesta time?”

“Practically never. Unless there are people around, this is too much for me. That I’m doing it now, actually, surprises me.”

“Uh-huh,” said Denison, noncommittally.

“You’re not surprised?”

“Should I be? My feeling is that each person does what he does either because he wants to or he must and in either case that’s his business, not mine.”

“Thanks, Ben. I mean it; it’s good to hear. One of the nice things about you, Ben, is that for an Immie, you’re willing to let us be ourselves. We’re underground people, we Lunarites, cave people, corridor people. And what’s wrong with that?”