He could not place the feeling. Certainly none of the symbols bore even slight resemblance to any written language known to him.

Something about their intricacy clouded even clear perception, and the emotional effect was not religious in any sense—it was stark, abysmal fear, as if the mysteries behind such symbols were too great for humanity to bear.

Ignoring him, Songeen persisted at her curious tasks. Newlin went and stood beside her, watching.

With gloved hand, she appeared to be tracing out some maze of deep cut markings that figured what must have been an altar-fane.

"Do you expect any results from this ritual mumbo-jumbo?" he questioned irritably.

Songeen looked up, startled. "Not more ritual than any other mathematics," she chided. "This is no temple, as you seem to imagine. It is the old quarantine station. I seek a doorway, but not into a hidden passage. There are other doorways. This one leads between dimensions. My world exists in a different plane. At least, our pathway to it follows strange ways, that you could never understand. You are no scientist or scholar. How could you grasp such unknown and forgotten matters? How could anyone in your world?"

Newlin stared at her, seeing things he had only guessed before.

"You are—alien," he said.

"You can't guess how alien," she answered. "I said I was not of Venusian stock. My people came from outside. Our world exists in the same plane as yours, a planet circling one of the nearer stars. This place was never our home, but we had colonies on Venus, Earth, Mars and one of Jupiter's moons. Other colonies—like this one—and observatories and quarantine stations. Our scientific observers and the medical staff stayed here. They studied and recorded and treated.

"We were not gods nor demons nor anything else supernatural. Just a people not human, but not too remote from humanity. Just emissaries and workers, students and doctors. You might call us elder brothers to the human race. We came not to conquer, enslave and exploit, but to help. Sometimes the Masters came with us, since they were interested in our work.

"Many times, by our guidance, human beings reached high levels of development in the arts and sciences. We taught them and guided their stumbling steps, and released to them such knowledge as we dared trust to them. Time and again, we raised them from the slime, only to have them fall back. There is fatal disease in the race, a disease of instability and cruelty and violence. Call it madness—insanity—in the technical sense. It is pathological, and the disease is common to the human race, in all its ramifications. The Solar System is mad, and all who dwell in it are lunatics. Dangerous and homicidal lunatics. Sol's system is the asylum and pesthouse of our galaxy. We—my people—are its keepers and doctors.

"We are charged with the care and treatment of an ailing form of life. Because of our near likeness, in form and thought, it was hoped that we could understand and help them; in time, perhaps, find a cure. There are other races inhabiting the galaxy—many of them, civilized, intelligent, living, and sometimes even of matter similar to ours. Their minds and bodies are too different. We are nearest, both in form and feeling.

"We have tried, patiently and hopefully. For the most part, it is a long history of frustration and failure. The corruption is too deep, too basic. It is part of the life-pattern of the race. Some individuals may rise above it, but its taint lies dormant even in them. At best, they are carriers. And there seems little future for such a race.

"Your galactic neighbors have been patient. But now a time of decision is near. Your ships explore, exploit at will within your system. You have pushed your limits to the furthest expansion of that system. Colonized and despoiled. Now, you stand at the expanding horizon of stellar flight. Other star-systems tempt your imaginations, and technology batters at the problems involved.

"Your neighbors are watching, and afraid. If your people burst outside the limits of Sol's system, the contagion of your madness will spread and engulf the galaxy. At our request, they have given time, granting extensions freely. For countless centuries we have tried, and our effort, all our work and thought, has led only to failure. Now, the others have set a time limit, and the deadline is very close. Very close. You are all living on borrowed time; and but for our pleadings, it would be still less.

"The masters often send emissaries to us, as we send ours to the planets of Sol. They help and advise us—not as superior beings or as gods, commanding—but as elder brothers, trying to share their wisdom, trying to help and guide us. They only help and advise, never intervene unless asked. Their advice is wisdom—sometimes terrible, difficult to understand, painful to accept. Recently, they brought a message from the other peoples—a message and ultimatum. And the Masters advised us to accept failure, to let them destroy humanity as a blot on the galaxy. We begged one more chance, a last, desperate gamble, probably foredoomed to failure. But they granted us the painful right of the doctor. We can operate, but if the patient dies, so do we. That was our choice."

As she talked, Songeen had engaged herself busily with the queerly formal operations of tracing the intricate diagrams.

"Do you believe me?" she asked, looking up.

"I'm not sure," Newlin replied frankly. "Are these Masters your gods?"

"Not gods. Living, intelligent beings, civilized, but not like us. Not material. I cannot explain. Even they are but advisers and messengers. Not all-wise, nor all-powerful. I wish they were; for they are kind."

"You sound like nice people," Newlin admitted. "I wish I could believe you. Off-hand, I think you're crazy. You say we're all off the beam. Then you talk like delusions of grandeur, and I have reason to know you can be homicidal. One of us is nuts. It's a toss-up."

Songeen smiled wearily. "It is possible that I am infected. I am inoculated against it, but so was Genarion. Will you believe that I loved him? He was my husband. We were children together, like brother and sister. Later, we were schooled together, were married, and asked to be assigned our task together. I did not sentence him, and I would have died myself first. But he had been here too long. If he had gone back, the contagion would have gone with him. It was fated. You and I were mere tools. Weapons."

"I'm sorry, Songeen. I do believe you loved him."

She shook her head in curious ruffle of emotion. "He was not the first. Many of our kind have renounced their birthright to go among your people, become like you and share your hideous lives. They are part of your great religions, part of the legendary history of your races."

Silence fell between them. Newlin thought of dying Mars, the burnt-out husk of Venus, the political and economic pesthole of Earth—even the grim, gray, terrible frontiers on the further planets and moons. His recollections were a dreadful pageant of spectres, of an ugly, terror-haunted childhood, of the bleak years of his barren, lonely wanderings—the memory kitbag of a homeless, and often hunted, spacebum.

"I can believe you," Newlin admitted slowly. "Most of the truly worthwhile leaders of mankind stand so far above the mob that they seem cast in a different mold. The real leaders—not politicians, nor military brass. The thinkers and scientists, even the prophets. Every great religion sprang from the vision or inspiration of a single leader. Beyond the chaff, the fragments of his actual thoughts and words—always sound good. But their followers don't follow them."

Songeen's face twisted in bitter wrath. "How terribly true! Can blind men follow the sun? They feel its warmth and reach out to it, but they stumble and fall on their own clay feet. Blind eyes and hands can never reach the light. Most of our emissaries, of that kind, die horribly, and their message is distorted to serve the ends of madness and corruption."

"Is there no hope for us?"

She stared at him. The pale glow of her moonbright eyes softened and intensified.

"One hope, and only in yourselves. We have tried and failed. If you feel so strongly, why have you done nothing?"

Bitter hatred snagged in Newlin's throat, making his laugh a sound of horror. "Not me. I can pity the masses of poor and down-trodden, but only as masses. As abstractions. Individually, I loathe them. Cornered rats will fight back—but men lick the boots of their tormentors. I learned only hate and defiance. I'm a cornered rat, not a man."

There was sound now, outside the door they had entered. Low at first, a mere scrabbling, as if the trackers had located their refuge. In moments only, there came a heavy pounding, followed by the skirl of atomic drills. Newlin tensed, his hand itching at the butt of his blaster.

"I'm a rat," he went on. "Cornered, like any other rat. And the terriers are out there scratching at my hole. If you'll open that non-squeak door, I'll talk to them. Maybe even kill a few."

"No," said Songeen positively. "No killing."

"But I'm a killer," Newlin insisted. "I've killed men before for a lot less reason. They're mining the door. How long do you think that will last against explosives?"

"Not long," the girl admitted. "But long enough. I have the key at last. Stand back."

Something formless and faintly radiant hovered indescribably in space. Suspended above the worn flooring, without visible support or tangible outline—it existed. Something like weird emptiness, a void appearing in the air itself.

"This is the portal," Songeen told him calmly. "Choose now. I will take you with me if I can without permission. But do not come with me, unwarned. There is grave peril, beyond anything I can describe to you. Beyond your experience or imagination. I will try to get you safely back, somehow. But I can promise nothing. And if you stay too long, there is no coming back. You must remain there; even if the terror of your surroundings kills you."

She stood beside the mysterious doorway, waiting. Newlin made a start to follow her, then balked.

"Wait!" he ordered roughly, as she was about to lead the way. "I can't go with you—not like this."

"Afraid?"

"Yes, but not of you or your world. I trust you. But you say everyone here is crazy. That it's infectious. Won't I carry the contagion into your world?"

Songeen hesitated. Shadows deepened inside her eyes. "You would, yes. But you will have contact with no one but me. Perhaps with the Masters—if I can take you to them. They may help us, but they are strange, unpredictable. Remember, I promise nothing and you come at your own risk. But your disease will harm no one—I'm inoculated, and the Masters are immune. If you overstay the limit and cannot return, you will be decontaminated just as we must be when we return to our own people.

"Here, in this room, is the place where the people of our colony on Venus were decontaminated before they could be allowed to enter the place of refuge the Masters had prepared for them. It is a cruel and harrowing experience. I know. There may be a way to get you safely back, without that. But your mind could never stand the shock. Understand that, before you choose."

"If it won't harm you, I'll go along," Newlin decided. "Almost any world would be an improvement on this."

"Don't be too sure," she warned. "At worst, the terror here is familiar. Come, then. Hold my hand, stay close, and try not to be frightened. It will be bad enough. And try not to change too much, or I will have difficulty returning you alive."

The portal swallowed her, and Newlin felt himself drawn into the force-vortex, still clinging to her hand.