The notion was startling. "Writing in someone else's book?"

"It used to be done all the time, Leyel. How can you possibly engage in dialogue with the author without writing your answers and arguments in the margins? Here she is." Zay preceded him under a low arch and down a few steps.

"I heard a man's voice with you, Zay," said Deet.

"Mine," said Leyel. He turned a comer and saw her there. After such a long journey to reach her, he thought for a dizzying moment that he didn't recognize her. That the library had randomized the librarians as well as the rooms, and he had happened upon a woman who merely resembled his long-familiar wife; he would have to reacquaint himself with her from the beginning.

"I thought so, " said Deet. She got up from her station and embraced him. Even this startled him, though she usually embraced him upon meeting. It's only the setting that's different, he told himself. I'm only surprised because usually she greets me like this at home, in familiar surroundings. And usually it's Deet arriving, not me.

Or was there, after all, a greater warmth in her greeting here? As if she loved him more in this place than at home? Or, perhaps, as if the new Deet were simply a warmer, more comfortable person?

I thought that she was comfortable with me.

Leyel felt uneasy, shy with her. "If I'd known my coming would cause so much trouble," he began. Why did he need so badly to apologize?

"What trouble?" asked Zay.

"Shouting. Interrupting."

"Listen to him, Deet. He thinks the world has stopped because of a couple of shouts."

In the distance they could hear a man bellowing someone's name.

"Happens all the time," said Zay. "I'd better get back. Some lordling from Mahagonny is probably fuming because I haven't granted his request for access to the Imperial account books."

"Nice to meet you," said Leyel.

"Good luck finding your way back," said Deet.

"Easy this time," said Zay. She paused only once on her way through the door, not to speak, but to slide a metallic wafer along an almost unnoticeable slot in the doorframe, above eye level. She turned back and winked at Deet. Then she was gone.

Leyel didn't ask what she had done-- if it were his business, something would have been said. But he suspected that Zay had either turned on or turned off a recording system. Unsure of whether they had privacy here from the library staff, Leyel merely stood for a moment, looking around. Deet's room really was filled with violets, real ones, growing out of cracks and apertures in the floor and walls. The smell was clear but not overpowering. "What is this room for?"

"For me. Today, anyway. I'm so glad you came."

"You never told me about this place."

"I didn't know about it until I was assigned to this section. Nobody talks about Indexing. We never tell outsiders. The architect died three thousand years ago. Only our own machinists understand how it works. It's like--"

"Fairyland."

"Exactly."

"A place where all the rules of the universe are suspended."

"Not all. We still stick with good old gravity. Inertia. That sort of thing."

"This place is right for you, Deet. This room."

"Most people go years without getting the flower room. It isn't always violets, you know. Sometimes climbing roses. Sometimes periwinkle. They say there's really a dozen flower rooms, but never more than one at a time is accessible. It's been violets for me both times, though."

Leyel couldn't help himself. He laughed. It was funny. It was delightful. What did this have to do with a library? And yet what a marvelous thing to have hidden away in the heart of this somber place. He sat down on a chair. Violets grew out of the top of the chairback, so that flowers brushed his shoulders.

"You finally got tired of staying in the apartment all day?" asked Deet.

Of course she would wonder why he finally came out, after all her invitations had been so long ignored. Yet he wasn't sure ff he could speak frankly. "I needed to talk with you." He glanced back at the slot Zay had used in the doorframe. "Alone," he said.

Was that a look of dread that crossed her face?

"We're alone," Deet said quietly. "Zay saw to that. Truly alone, as we can't be even in the apartment." It took Leyel a moment to realize what she was asserting. He dared not even speak the word. So he mouthed his question: Pubs?

"They never bother with the library in their normal spying. Even if they set up something special for you, there's now an interference field blocking out our conversation. Chances are, though, that they won't bother to monitor you again until you leave here."

She seemed edgy. Impatient. As if she didn't like having this conversation. As if she wanted him to get on with it, or maybe just get it over with.

"If you don't mind," he said. "I haven't interrupted you here before, I thought that just this once--"

"Of course," she said. But she was still tense. As if she feared what he might say.

So he explained to her all his thoughts about language. All that he had gleaned from Kispitorian's and Magolissian's work. She seemed to relax almost as soon as it became clear he was talking about his research. What did she dread, he wondered. Was she afraid I came to talk about our relationship? She hardly needed to fear that. He had no intention of making things more difficult by whining about things that could not be helped.

When he was through explaining the ideas that had come to him, she nodded carefully-- as she had done a thousand times before, after he explained an idea or argument. "I don't know," she finally said. As so many times before, she was reluctant to commit herself to an immediate response.

And, as he had often done, he insisted. "But what do you think?"

She pursed her lips. "Just offhand-- I've never tried a serious linguistic application of community theory, beyond jargon formation, so this is just my first thought-- but try this. Maybe small isolated populations guard their language-- jealously, because it's part of who they are. Maybe language is the most powerful ritual of all, so that people who have the same language are one in a way that people who can't understand each other's speech never are. We'd never know, would we, since everybody for ten thousand years has spoken Standard."

"So it isn't the size of the population, then, so much as--"

"How much they care about their language. How much it defines them as a community.

A large population starts to think that everybody talks like them. They want to distinguish themselves, form a separate identity. Then they start developing jargons and slangs to separate themselves from others. Isn't that what happens to common speech? Children try to find ways of talking that their parents don't use.

Professionals talk in private vocabularies so laymen won't know the passwords. All rituals for community definition."

Leyel nodded gravely, but he had one obvious doubt.

Obvious enough that Deet knew it, too. "Yes, yes, I know, Leyel. I immediately interpreted your question in terms of my own discipline. Like physicists who think that everything can be explained by physics."

Leyel laughed. "I thought of that, but what you said makes sense. And it would explain why the natural tendency of communities is to diversify language. We want a common tongue, a language of open discourse. But we also want private languages.

Except a completely private language would be useless-- whom would we talk to? So wherever a community forms, it creates at least a few linguistic barriers to outsiders, a few shibboleths that only insiders will know."

"And the more allegiance a person has to a community, the more fluent he'll become in that language, and the more he'll speak it."

"Yes, it makes sense," said Leyel. "So easy. You see how much I need you?"