Trehearne shrugged, and put them on. He had to admit they were comfortable. There was a mirror set inside the locker door, and he studied himself in it. He was startled to see how changed he was in the Vardda dress. The last vestige of Earth was gone.
Still looking into the mirror, he said, "Edri...."
"Yes?"
"I am a Vardda now. I've proved it. What can they do to me, on Llyrdis?"
"I wish I could tell you. Actually, you are a true Vardda, a complete atavism. But legally—that's another thing. That basic tenet of Vardda law that Kerrel referred to is a prohibition against admitting into our race non-Vardda strains of any kind. Keeping the Vardda blood pure isn't just pride, it's an economic necessity, and the one unbreakable tabu. The solution of that puzzle will be up to the Council, and my advice is to forget it until then. Come on, and I'll give you something else to think about."
Trehearne was glad enough to go. The lost, sick, nightmarish feeling was creeping back on him again, and he was glad of any diversion. They went out into the corridor, and he followed Edri forward. He became aware of a deep inner vibration of power that filled the ship, a sort of humming drone that seemed to challenge the whole universe to make it stop. It sang in his ears, in his blood and his quivering nerve-ends, and the excitement he had felt when he first saw the ship returned to him full force. This was the ultimate. All his life he had been playing with children's toys, but here, under his feet and all around him, was the highest dream of men.
"What's the motive power? What's the principle? And how can you go faster than light? The limiting speed, contraction, mass...."
Edri laughed. "One at a time, please. And such simple little questions, too! It took centuries to evolve a technology capable of answering them, and you want me to explain it all in a few words. Well, a few words is all I know about it. I'm a drinker by profession, not a scientist. Anyway, a really functional ship, whether it plies water, air, or space, must get its motive power by reacting against the element it travels in. And so, right now, the big atomic-powered generators in the stern are producing fifth-order rays which react against the fabric of space itself. And space, not wishing to be torn apart, obligingly thrusts us onward. Very simple, I believe, once you know the trick."
Trehearne grunted.
"As to limiting speeds," said Edri, "the Vardda scientists used to believe in them too—until they got to playing around with cosmotrons. One day a particle they were experimenting with upset them horribly by going much faster than light, and that's how they discovered the fifth-order rays. They found out, as your scientists will find, that the theoretical absolutes you set up from limited knowledge will prove illusory when your knowledge expands. I could explain all that to you if I knew continuum-mechanics better than I do!"