The only man on the planet sat on a rocky ledge three miles uphill from the two ships, gazing broodingly down at them. He was a big fellow in neatly patched shipboard clothing. His hands were clean, his face carefully shaved. He had two of the castaway's traditional possessions with him; a massive hunting bow rested against the rocks, and a minor representative of the class of life which was this world's equivalent of birds was hopping about near his feet. This was a thrush-sized creature with a jaunty bearing and bright yellow eyes. From the front of its round face protruded a short, narrow tube tipped with small, sharp teeth. Round, horny knobs at the ends of its long toes protected retractile claws as it bounded back and forth between the bow and the man, giving a quick flutter of its wings on each bound. Finally it stopped before the man, stretching its neck to stare up at him, trying to catch his attention.
He roused from his musing, glanced irritably down at it.
"Not now, Birdie," he said. "Keep quiet!"
The man's gaze returned to the two ships, then passed briefly along a towering range of volcanos on the other side of the lake, and lifted to the cloudless blue sky. His eyes probed on, searching the sunlit, empty vault above him. If a ship ever came again, it would come from there, the two wrecks by the lake arm already fixed in its detectors; it would not come gliding along the surface of the planet....
Birdie produced a sharp, plaintive whistle. The man looked at it.
"Shut up, stupid!" he told it.
He reached into the inner pocket of his coat, took out a small object wrapped in a piece of leather, and unfolded the leather.
Then it lay in his cupped palm, and blazed with the brilliance of twenty diamonds, seeming to flash the fires of the spectrum furiously from every faceted surface, without ever quite subduing the pure violet luminance which made a star hyacinth impossible to imitate or, once seen, to forget. The most beautiful of gems, the rarest, the most valuable. The man who was a castaway stared at it for long seconds, his breath quickening and his hand beginning to tremble. Finally he folded the chip of incredible mineral back into the leather, replaced it carefully in his pocket.
When he looked about again, the sunlit air seemed brighter, the coloring of lake and land more vivid and alive. Once during each of this world's short days, but no oftener, he permitted himself to look at the star hyacinth. It was a ritual adhered to with almost religious strictness, and it had kept him as sane as he was ever likely to be again, for over six years.
It might, he sometimes thought, keep him sane until a third ship presently came along to this place. And then ...