The Wheel is Death

The little world was quiet at last. Only one thing remained to be done—Gor Zan must be slain, quickly.
His thin scream keened away in the distance.
He was too late to stop them. Old Kaliz dropped his upraised arm, and at his signal the four naked under-priests flung the bound body of Gor Zan over the precipice. Ortho heard his friend's thin scream keening away until it dwindled in the distance and the muted roar of the falls boiling at the cliff's bottom floated upward and drowned it.
He turned to run, but the horror of what he had seen numbed his limbs to nightmare slowness. Kaliz and the four under-priests caught him before he had taken a dozen steps.
You are still a neophyte, old Kaliz said gently. You have only begun to learn, and so you cannot understand why Gor Zan had to die. The answer lies there. He pointed a wrinkled hand to the Valley below.
Over the heads of the four priests who squatted on the ledge outside the priest-cave Ortho looked down into the Valley, the lush green miles of its even floor clothed in a faint rosy haze of vapor. The sun sat red upon the western wall; above the eastern rim the rising moon hung warm and turquoise-blue, its great encircling ring pulsing like an aura of living light. Under its glow the Valley-haze turned violet and then blue, and on the heels of its rising came the faint elfin voices of the People, leaving their caves to play in the meadow.
Ortho sat back upon his polished sitting-stone and met the high-priest's eyes defiantly.
There is no reason down there, he said sullenly. It is only the People, coming out to play under the moon. You killed Gor Zan because he was wiser than you, because he talked to the People and made clear to them things they did not understand before. You were jealous of him and you killed him lest he make your own wisdom seem small in the eyes of the People.
Kaliz sighed and seated himself stiffly on his own sitting-stone.
The young do not learn easily, he said. But believe this, Ortho—your friend Gor Zan was a snare to the People and a deadly menace to their way of life. We took him from them reluctantly and only as a last resort, before he could start the People again on the bloody path of ambition, progress and the Machine.