"There are fine machines, already. Now my robot brains can tend them, and men will be set free." "Free?" The girl stared at him, a horror in her eyes. "Or enslaved—to your robots?" She pointed at the black, pulsating mass in the beaker. "It often seems to me, Bari," she breathed, "that man is already the slave of his machines! He toils to build them, to repair them, to find fuel for them. Now, if you put a brain in a space ship, will it not think of men merely as servants, transported that they might care for it?" Her voice was husky with dread. "What security will there be, Bari? What certainty that your robots will tolerate men, even as slaves?" Bari Horn stared at her a long time, then slowly nodded. "All right, Dondara," he said. "I'll make you the guardian of mankind. For, while the brain is normally eternal, it has a peculiar vulnerability—a fatal instability that I have been working two years to remove. I'll leave it. And it will be your blade on the life-thread of Malgarth, ready to sever it when you will." Eagerly, the girl caught his arm. "Please," she whispered. "I'll keep the secret well." III The Robot Corporation The Robot Corporation Lest Malgarth should learn it too, Bari Horn took the girl down into a ray-screened subterranean laboratory to impart the fateful secret. My strange perception could not penetrate its walls. I did not learn the secret. But, from my spinning vault in space, I saw the tragic sequel. Under a charter signed by the Galactic Emperor himself, Bari Horn organized the Universal Robot Technomaton Corporation, to place his invention at the service of all the stellar system. With the first money received, he built a body for Malgarth. It was a strange scene in the laboratory, when he removed the great black brain from its beaker into the cranial case of that gigantic, vaguely manlike metal body. The grotesque huge glittering form came suddenly to life. It peered at its maker with blue-shining lenses, and lurched stiffly toward him. Bari Horn retreated a little.