Compasses didn't work on Tanith, and only a few men could even operate a radio direction finder, but Langdon knew his way and walked steadily ahead. His sense of direction kept rotating crazily; it insisted he was going the wrong way, no, now the house lay over to the right—no, the left, and a few paces straight up.... But by now he had compensated for that; he didn't need eyes or kinesthetic sense to find his way home.
There was a new singing in the violet air. Langdon checked his stride with a sudden eerie prickling along his spine. The mist eddied about him, thick and blinding, but now the city was growing out of it; he saw the towers and streets and thronging airways come raggedly into being.
Suddenly he stood in the middle of the city. It was complete this time, not the few fragmentary glimpses he ordinarily had. The mist flowed through the ghostly spires and pylons but somehow he could see anyway, the city lay for kilometers around.
It was not a human city. It lay under three hurtling moons, lit only by their brilliant silver. But it lived, it pulsed with life about him; the shining dwellers soared past and seemed to leave a trail of little sparks luminous against the night. They were not men, the old folk of Tanith, but they were beautiful.
There was no sound. Langdon stood in a well of silence while the city lay around him, and he thought that perhaps he was the ghost, alone and excommunicated on a world which lay beyond even the dreams of man.
But that was nonsense, he thought, angry with himself. It was simply that temporal mirages transmitted only light, not sound. He was here, now, alive, and the city was dust these many million years.
Two dwellers flew past him, male and female with arms linked, laughing soundlessly into each other's golden eyes. The male's great glowing wings brushed through Langdon's body. He stood briefly in a shower of whirling light-motes—and they didn't heed him, they didn't know he was there. They were only for each other, those two, and he was a ghost out of an unreal and unthinkably remote future.
The mirage faded. Slowly, in bits and patches, it dissolved back into the purple fog. He was alone again.
He shivered, and hastened his steps homeward.