Free The World of Null-A by A. E. van Vogt, van Vogt Page A

Her gaze jumped from his face to his muddy feet. “Oh, my gosh!” she said.
    She set down the plate and faced him. Gosseyn hit her once and caught her as she sagged toward him. He felt without compunction. She might be innocent. She might know nothing of her husband’s activities. But it was too dangerous to risk a struggle with her. If she was null-A and he gave her an opportunity, she would have enough physical stamina to break away from him and set off an alarm.
    She began to writhe in his arms as he carried her up the stairs, but before she was fully awake, he had her bound and gagged and stretched out beside her husband. He left the two of them lying there and went out to explore the house. Before he could be sure that his victory was complete, he had to verify that no one else was around.

VII
     
    To be acceptable as scientific knowledge,
    a truth must be a deduction from other truths.

    Aristotle
    The Nicomachean Ethics,  circa 340 B.C.
     
    It seemed to be a hospital. There were fifteen additional bedrooms, each complete with electronic and other standard hospital equipment. The laboratory and the surgery were in the basement. Gosseyn hurried from room to room. When he had finally convinced himself that no one else was around, he began a more careful search of the rooms.
    He felt dissatisfied. Surely it wasn’t going to be as easy as this. As he peered into clothes closets and riffled hastily through unlocked drawers, he decided that his best plan was to get the facts he wanted, then leave. The sooner he departed the less chance there was of someone else appearing on the scene.
    All his rummaging failed to locate a weapon. The disappointment of that sharpened his sense of danger from an outside source. Finally, hastily, he went out onto the veranda in the front of the building and then the terrace in the rear. A quick look, he thought, to see if anyone was coming, and then questions.
    There were so many questions.
    It was the view from the terrace that delayed him. For he realized why he had been unable to see the valley that was there beyond the garden. From the edge of the terrace, he looked down, down, into the gray-blue haze of distance. The hill on which the hospital was built was not really a hill at all, but a lower peak of a mountain. He could see where the slopes leveled off. There were trees down there, too. They stretched for scores of miles and faded into the mists of remoteness. There were no mountains in that direction, so far as he could make out.
    But that didn’t matter. What seemed clear now was that this building could be approached only from the air. True, they could land a mile or more away, as he must have been landed, and then walk. But the air approach was an essential step in the process.
    It was not particularly encouraging. One minute the sky could be empty except for the hazy atmosphere. The next a ship loaded with gang members could be settling down on the terrace itself.
    Gosseyn drew a deep, slow, exhilarated breath. The air was still rain-fresh, and it braced him to acceptance of his danger. The very mildness of the day calmed his restless mind. He sighed and let the sweetness of the day tingle upon and through his body. It was impossible to tell what time of day it was. The sun was not visible. The vast height of the sky was cut off by clouds that were almost hidden in the haze of an atmosphere that was more than a thousand miles thick. A hush lay over the day, a silence so intense that it was startling-but not frightening. There was a grandeur here, a peace unequaled by anything in his experience. He felt himself in a timeless world.
    The mood passed more swiftly than it had come. For him, it was time that mattered. What he could learn in the shortest possible time might determine the fate of the solar system. He searched the sky in a quick last look. And then he went inside and up to his prisoners. His presence here was an unqualified mystery, but through them he had at least