"Not now, no," said Davout. Thank you he signed. "Can I move from the bed now?"

Li’s look turned abstract as he scanned indicators projected somewhere in his mind. Yes "You may," he said. He rose from his chair, took the pipe from his mouth. "You are in a hospital, I should add," he said, "but you do not have the formal status of patient, and may leave at any time. Likewise, you may stay here for the foreseeable future, as long as you feel it necessary."

Thank you "Where is this hospital, by the way?"

" West Java. The city of Bandung."

Earth, then. Which Davout had not seen in seventy-seven years. Memory’s gentle fingers touched his mind with the scent of durian, of ocean, of mace, cloves, and turmeric.

He knew he had never been in Java before, though, and wondered whence the memory came. From one of his sibs, perhaps?

Thank you Davout signed again, putting a touch of finality, a kind of dismissal, into the twist of his fingers.

Dr. Li left Davout alone, in his new/old body, in the room that whispered of memory and pain.

In a dark wood armoire, Davout found identification and clothing, and a record confirming that his account had received seventy-eight years’ back pay. His electronic inbox contained downloads from his sibs and more personal messages than he could cope with-he would have to construct an electronic personality to answer most of them.

He dressed and left the hospital. Whoever supervised his reassembly-Dr. Li perhaps-had thoughtfully included a complete Earth atlas in his internal ROM, and he accessed it as he walked, making random turnings but never getting lost. The furious sun burned down with tropical intensity, but his current body was constructed to bear heat, and a breeze off the mountains made pleasant even the blazing noontide.

The joyful metal music of the gamelans clattered from almost every doorway. People in bright clothing, agile as the siamang of near Sumatra, sped overhead along treeways and ropeways, arms and hands modified for brachiation. Robots, immune to the heat, shimmered past on silent tires. Davout found it all strangely familiar, as if he had been here in a dream.

And then he found himself by the sea, and a pang of familiarity knifed through his heart. Home! cried his thoughts. Other worlds he had built, other beauties he had seen, but he had never beheld this blue, this perfection, anywhere else but on his native sphere. Subtle differences in atmospherics had rendered this color unnatural on any other world.

And with the cry of familiarity came a memory: it had been Davout the Silent who had come here, a century or more ago, and Katrin had been by his side.

But Davout’s Katrin was dead. And as he looked on Earth’s beauty, he felt his world of joy turn to bitter ashes.

Alas! His fingers formed the word unbidden. Alas!

He lived in a world where no one died, and nothing was ever lost. One understood that such things occasionally occurred, but never-hardly ever-to anyone that one knew. Physical immortality was cheap and easy, and was supported by so many alternate systems: backing up the mind by downloading, or downloading into a virtual reality system or into a durable machine. Nanosystems duplicated the body or improved it, adapted it for different environments. Data slumbered in secure storage, awaiting the electron kiss that returned it to life. Bringing a child to term in the womb was now the rarest form of reproduction, and bringing a child to life in a machine womb the next rarest.

It was so much easier to have the nanos duplicate you as an adult. Then, at least, you had someone to talk to.

No one died, and nothing was ever lost. But Katrin died, Davout thought, and now I am lost, and it was not supposed to be this way.

Alas! Fingers wailed the grief that was stopped up in Davout’s throat. Alas!

Davout and Katrin had met in school, members of the last generation in which womb-breeding outnumbered the alternatives. Immortality whispered its covenant into their receptive ears. On their first meeting, attending a lecture (Dolphus on "Reinventing the Humboldt Sea") at the College of Mystery, they looked at each other and knew, as if angels had whispered into their ears, that there was now one less mystery in the world, that each served as an answer to another, that each fitted neatly into a hollow that the other had perceived in his or her soul, dropping into place as neatly as a butter-smooth piece in a finely made teak puzzle-or, considering their interests, as easily as a carbolic functional group nested into place on an indole ring.

Their rapport was, they freely admitted, miraculous. Still young, they exploded into the world, into a universe that welcomed them.

He could not bear to be away from her. Twenty-four hours was the absolute limit before Davout’s nerves began to beat a frustrated little tattoo, and he found himself conjuring a phantom Katrin in his imagination, just to have someone to share the world with-he needed her there, needed this human lens through which he viewed the universe.

Without her, Davout found the cosmos veiled in a kind of uncertainty. While it was possible to apprehend certain things (the usefulness of a coenocytic arrangement of cells in the transmission of information-bearing proteins and nuclei, the historical significance of the Yucatan astrobleme, the limitations of the Benard cell model in predicting thermic instabilities in the atmosphere), these things lacked noesis, existed only as a series of singular, purposeless accidents. Reflected through Katrin, however, the world took on brilliance, purpose, and genius. With Katrin he could feast upon the universe; without her the world lacked savor.

Their interests were similar enough for each to generate enthusiasm in the other, diverse enough that each was able to add perspective to the other’s work. They worked in cozy harmony, back to back, two desks set in the same room. Sometimes Davout would return from a meeting, or a coffee break, and find that Katrin had added new paragraphs, sometimes an entire new direction, to his latest effort. On occasion he would return the favor. Their early work-eccentric, proliferating in too many directions, toward too many specialties-showed life and promise and more than a hint of brilliance.

Too much, they decided, for just the two of them. They wanted to do too much, and all at once, and an immortal lifetime was not time enough.

And so, as soon as they could afford it, Red Katrin, the original, was duplicated-with a few cosmetic alterations-in Dark Katrin and later Katrin the Fair; and nanomachines read Old Davout, blood and bone and the long strands of numbers that were his soul, and created perfect copies in Dangerous Davout, later called the Conqueror, and Davout the Silent.

Two had become six, and half a dozen, they now agreed, was about all the universe could handle for the present. The wild tangle of overlapping interests was parceled out between the three couples, each taking one of the three most noble paths to understanding. The eldest couple chose History as their domain, a part of which involved chronicling the adventures of their sibs; the second couple took Science; the third Psyche, the exploration of the human mind. Any developments, any insights, on the part of one of the sibs could be shared with the others through downloads. In the beginning they downloaded themselves almost continually, sharing their thoughts and experiences and plans in a creative frenzy. Later, as separate lives and more specialized careers developed, the downloads grew less frequent, though there were no interruptions until Dangerous Davout and Dark Katrin took their first voyage to another star. They spent over fifty years away, though to them it was less than thirty; and the downloads from Earth, pulsed over immense distances by communications lasers, were less frequent, and less frequently resorted to. The lives of the other couples, lived at what seemed speeded-up rates, were of decreasing relevance to their own existence, as if they were lives that dwelled in a half-remembered dream.