I

The human male had lived on the avenue for some thirty-two years. Neighbors enerally regarded him as being a solitary creature, short-tempered on occasion, but never rude without cause. His dark wit was locally famous, and a withering intelligence was rumored to hide behind the brown-black eyes. Those with an appreciation of human beauty claimed that he was not particularly handsome, his face a touch asymmetrical, the skin rough and fleshy, while his thick mahogany-brown hair looked as if it was cut with a knife and his own strong hands. Yet that homeliness made him intriguing to some human females, judging by the idle chatter. He wasn't large for a human, but most considered him substantially built. Perhaps it was the way he walked, his back erect and shoulders squared while his face tilted slightly forwards, as if looking down from a great height. Some guessed he had been born on a high-gravity world, since the oldest habits never died. Or maybe this wasn't his true body, and his soul still hungered for the days when he was a giant. Endless speculations were woven about the man's past. He had a name, and everybody knew it. He had a biography, thorough and easily observed in the public records. But there were at least a dozen alternate versions of his past and left-behind troubles. He was a failed poet, or a dangerously successful poet, or a refugee who had escaped some political mess -unless he was some species of criminal, of course. One certainty was his financial security; but where his money came from was a subject of considerable debate. Inherited, some claimed. Others voted for gambling winnings or lucrative investments on now-distant colony worlds. Whatever the story, the man had the luxury of filling his days doing very little, and during his years on this obscure avenue, he had helped his neighbors with unsolicited gifts of money and sometimes more impressive flavors of aid.

Thirty-two years was not a long time. Not for the creatures that routinely traveled between the stars. Most of the ship's passengers and all of its crew were ageless souls, durable and disease-free, with enhanced minds possessing a stability and depth of memory ready to endure a million years of comfortable existence. Which was why three decades was little different than an afternoon, and why for another century or twenty, locals would still refer to their neighbor as the newcomer.

Such was life onboard the Great Ship.

There were millions of avenues like this one. Some were short enough to walk in a day, while others stretched for thousands of uninterrupted kilometers. Many avenues remained empty, dark and cold as when humans first discovered the Great Ship. But some had been awakened, made habitable to human owners or the oddest alien passengers. Whoever built the ship-presumably an ancient, long-extinct species - it had been designed to serve as home for a wide array of organisms. That much was obvious. And there was no other starship like the Great Ship: larger than most worlds and durable enough to survive eons between the galaxies, and to almost every eye, lovely.

The wealthiest citizens from thousands of worlds had surrendered fortunes for the pleasure of riding inside this fabulous machine, embarking on a half-million-year voyage to circumnavigate the galaxy. Even the poorest passenger living in the tiniest of quarters looked on the majesty of his grand home and felt singularly blessed.

This particular avenue was almost a hundred kilometers long and barely two hundred meters across. And it was tilted. Wastewater made a shallow river that sang its way across a floor of sugar-and-pepper granite. For fifty thousand years, the river had flowed without interruption, etching out a shallow channel. Locals had built bridges at the likely places, and along the banks they erected tubs and pots filled with soils that mimicked countless worlds, giving roots and sessile feet happy places to stand. A large pot rested outside the man's front door-a vessel made of ceramic foam trimmed with polished brass and covering nearly a tenth of a hectare. When the man first arrived, he poisoned the old jungle and planted another. But he wasn't much of a gardener, apparently. The new foliage hadn't prospered, weed species and odd volunteers emerging from the ruins.

Along the pot's edge stood a ragged patch of llano vibra - an alien flower famous for its wild haunting songs. "I should cut that weed out of there," he would tell neighbors. "I pretty much hate the racket it's making." Yet he didn't kill them or tear out the little voice boxes. And after a decade or two of hearing his complaints, his neighbors began to understand that he secretly enjoyed their complicated, utterly alien melodies.

Most of his neighbors were sentient, fully mobile machines. Early in the voyage, a charitable foundation dedicated to finding homes and livelihoods for freed mechanical slaves leased the avenue. But over the millennia, organic species had cut their own apartments into the walls, including a janusian couple downstream, and upstream, an extended family of harum-scarums.

The human was a loner, but by no means was he a hermit.

True solitude was the easiest trick to manage. There were billions of passengers onboard, but the great bulk of the ship was full of hollow places and great caves, seas of water and ammonia and methane, as well as moon-sized tanks filled with liquid hydrogen. Most locations were empty. Wilderness was everywhere, cheap and inviting. Indeed, a brief journey by cap-car could take the man to any of six wild places -alien environments and hidden sewage conduits and a maze-like cavern that was rumored to never have been mapped. That was one advantage: At all times, he had more than one escape route. Another advantage was his neighbors. Machines were always bright in easy ways, fountains of information if you knew how to employ them, but indifferent to the subtleties of organic life, if not out and out blind.

Long ago, Pamir had lived as a hermit. That was only sensible at the time. Ship captains rarely abandoned their posts, particularly a captain of his rank and great promise.

He brought his fall upon himself, with the help of an alien.

An alien who happened to be his lover, too.

The creature was a Gaian and a refugee, and Pamir broke several rules, helping find her sanctuary deep inside the ship. But another Gaian came searching for her, and in the end, both of those very odd creatures were nearly dead. The ship was never at risk, but a significant facility was destroyed, and after making things as right as possible, Pamir vanished into the general population, waiting for the proverbial coast to clear.

Thousands of years had brought tiny changes to his status. By most accounts, the Master Captain had stopped searching for him. Two or three or four possible escapes from the ship had been recorded, each placing him on a different colony world. Or he had died in some ugly fashion. The best story put him inside a frigid little cavern. Smugglers had killed his body and sealed it into a tomb of glass, and after centuries without food or air, the body had stopped trying to heal itself. Pamir was a blind brain trapped inside a frozen carcass, and the smugglers were eventually captured and interrogated by the best in that narrow field. According to coerced testimonies, they confessed to killing the infamous captain, though the precise location of their crime was not known and would never be found.

Pamir spent another few thousand years wandering, changing homes and remaking his face and name. He had worn nearly seventy identities, each elaborate enough to be believed, yet dull enough to escape notice. For good reasons, he found it helpful to wear an air of mystery, letting neighbors invent any odd story to explain the gaps in his biography. Whatever they dreamed up, it fell far from the truth. Machines and men couldn't imagine the turns and odd blessings of his life. Yet despite all of that, Pamir remained a good captain. A sense of obligation forced him to watch after the passengers and ship. He might live on the run for the next two hundred millennia, but he would always be committed to this great machine and its precious, nearly countless inhabitants.

Now and again, he did large favors.

Like with the harum-scarums living next door. They were a bipedal species- giants by every measure -adorned with armored plates and spine-encrusted elbows and an arrogance earned by millions of years of wandering among the stars. But this particular family was politically weak, and that was a bad way to be among harum-scarums. They had troubles with an old Mother-of-fathers, and when Pamir saw what was happening, he interceded. Over the course of six months, by means both subtle and decisive, he put an end to the feud. The Mother-of-father came to her enemies' home, walking backwards as a sign of total submission; and with a plaintive voice, she begged for death, or at the very least, a forgetting of her crimes.

No one saw Pamir's hand in this business. If they had, he would have laughed it off, and moments later, he would have vanished, throwing himself into another identity in a distant avenue.

Large deeds always demanded a complete change of life.

A fresh face.

A slightly rebuilt body.

And another forgettable name.

That was how Pamir lived. And he had come to believe that it wasn't a particularly bad way to live. Fate or some other woman-deity had given him this wondrous excuse to be alert at all times, to accept nothing as it first appeared, helping those who deserved to be helped, and when the time came, remaking himself all over again.

And that time always came…