"Sift the sand to find the seeds of the universe."

The voice that came to Shan Tao Yun through the night was like wind over grass. "Let them reach the original ground then plant them," the lama said as Shan's gaze drifted from the white sand in his palm to the brilliant half moon. He knew his teacher Gendun meant Shan's original ground, the seedbed of his soul, what Gendun called Shan's beginning place. But on such a night he could not shake the sense that Tibet itself was the true original ground, that the vast remote land was the world's beginning place, where the planet, and humankind, never stopped shaping themselves, where the highest mountains, the strongest winds, and the most rugged souls had always evolved together.

Ten feet farther down the river's edge Shan's old friend and former cellmate Lokesh chanted quietly, beads entwined in his fingers, his mantra almost indistinguishable from the rustle of the water. Shan breathed in the fragrant smoke of the juniper branches they had brought to burn at the water's edge and watched as a meteor flew over a low distant shimmering in the sky, the only hint of the snowcapped mountains that lined the horizon. It seemed he could reach out and touch the moon. If the earth had a place and a season for growing souls this was surely it, the chill moonlit spring of the high Tibetan wilderness.

Shan watched as though from a distance as Gendun gently opened Shan's fingers and lifted his hand toward the moon, then lowered it and turned Shan's wrist to empty the sand into the small clay jar they had brought from their hermitage ten miles away.

"Lha gyal lo," a voice murmured on Shan's opposite side. It was the caretaker of the hermitage, Shopo, his voice cracking with emotion. "Victory to the gods." They had arrived at the river at dusk, and only now, after the lamas and Lokesh had spent two hours speaking with the nagas, the water deities, had Gendun decided Shan could begin collecting the special white sand.

"Lha gyal lo!" an excited voice echoed halfway up the slope behind them. It was one of the four dropka, Tibetan herders, who had escorted them to the river and now stood guard, nervously watching the darkened landscape. Gendun and Shopo were outlawed monks engaged in an outlawed ritual, and the patrols had grown aggressive.

Without even sensing the movement, Shan found his hand back in the water, and when he lifted it out it was full of the white sand again. In the moonlight he saw Lokesh's eyes widen and gleam with excitement as, slowly repeating the motions Gendun had shown him, Shan washed the sand in the moonlight then emptied his palm into the jar.

Gendun's face, worn smooth as a river stone, wrinkled with a smile. "Each of the grains is the essence of a mountain," the lama said as Shan's hand dipped into the water once more, "all that is left when the mountain has shed its husk." Shan had heard the words a dozen times during the past two months as they had ventured into the night to collect sands from places known only to Shopo and the herders. In their turn each of the vast peaks that lined the horizon would be reduced to such a grain, Gendun explained, and so it would be for all mountains, all continents, all planets. It would all end as it began, in such tiny seeds, and humankind in all its glory could never match the power reflected in a single grain. The words were a way of teaching impermanence, Shan knew, and of showing respect for the nagas from whom they borrowed the sand.

Shan sensed a distant drumming noise in his ears and the moon seemed to edge even closer as he gathered another handful for the jar. His hand reached toward the clay jar then froze in midair as a frantic voice split the stillness.

"Mik tada! Watch out! Run!" It was one of the dropka sentinels on the ridge above. "The fire! Dowse the fire!"

Shan heard feet scrambling over the gravel of the slope above and looked up to see two men silhouetted in the moonlight, realizing in the same moment that the drumming was not in his head. It was a helicopter coming in low and fast, the way Public Security operated when raiding Tibetan camps.

One of the guards, wearing a black wool cap, darted to the water's edge, futilely pulling on Lokesh's shoulder, then moving to Shan's side to tug on his collar. "You have to go patch that god!" the man shouted. "We must flee!"

Shan let himself be pulled to his feet, his spine chilling as he looked first toward the helicopter, then at the lamas, who only smiled and continued their homage to the river. Gendun and Shopo were accustomed to risking imprisonment for simple acts of reverence. And though Shan and the dropka might be disturbed by the increased pressure from Public Security, there was only one mystery that ever concerned Gendun, the mystery of growing and strengthening souls.

"If it is Public Security they will drop soldiers over the ridge to surround us!" the sentinel groaned as he kicked sticks from the small fire. "They will have machine guns and devices to see in the night!"

Shan studied the man in the black cap warily. He had more than a mere herder's grasp of Chinese weapons and tactics. Shan suddenly realized that he had not seen the man before, that he had not been part of their escort.

Gendun replied by raising a finger to his lips, then gestured toward the water. "There are nagas," he observed quietly.

"The sand will be useless if you are arrested," Shan whispered, his hand on Gendun's shoulder.

"There are nagas," the lama repeated.

"It's only sand," the stranger argued, casting a tormented glance in the direction of the approaching helicopter. Public Security had its own ways of teaching impermanence.

As Gendun turned back to the water Lokesh was suddenly at the stranger's side, pulling him away from the lama. "We are creating something wonderful with that sand," Shan's old friend whispered, the white stubble of his whiskers glistening in the moonlight. He placed his hands on the man's shoulders to be sure the young Tibetan was listening and gazed into his face. "When we are done," he explained in a solemn, confiding tone, "it will change the world."

The man in the black cap illuminated an electric lantern and aimed the beam into Lokesh's face as if doubting he had heard the old Tibetan correctly, then, as the sound of the helicopter surged to a crescendo, he snapped off the light and dove to the ground. A moment later the machine was gone. It had skimmed the ridge above but had been traveling too fast to deploy troops.

The man in the cap lit his lantern and muttered under his breath, casting an accusing glance at the other guards, who had gathered behind Lokesh with sheepish, even embarrassed expressions. He aimed the light beam into each man's face, settling it on Shan's, which he studied with a frown. "You are supposed to be delivering an artifact," he said to Lokesh, his voice heavy with impatience. He did not move the light from Shan.

"We are," Lokesh agreed. "We are preparing for the journey," he added with a gesture toward the two lamas, who continued to speak over the swift dark river.

"Preparing?" the man scoffed. "What have you been doing for two months? You're not preparing, you're taking root! You will ruin us!"

Shan stepped beside Lokesh and pushed the man's lantern down. "Those who brought the artifact agreed that the lamas will decide the proper way to return it." He knew now the stranger, like those who had brought the sacred artifact to Shopo's hermitage, was a purba, a member of the secret Tibetan resistance.