"Last chance for vocal speech. We'd better know how we all feel. In the parchments we carry we have about the greatest possible material gift to man, a dream of his from his beginnings. Practical freedom from death, from physical affliction. Immensely increased range of possibilities. The universe, in almost all of its phases, can truly become his stamping ground, now. It's a treasure that men would kill to have. To me it is an inevitable and wonderful step of progress. But there's a confusion in it, based on a split in human nature. You've seen and felt how it works. The mistrust of old instincts for the completely different and revolutionary. Fear and even horror that invokes a savage compulsion to fight back. There's trouble ahead--between the two halves of man's character--represented by eagerness and revulsion. We know how it is from our own feelings. The android bodies we now have are the substance of the treasure, the gift. We exult at its legendary advantages; yet we have a terror of a strange exile, if we can't get back to our weak, natural flesh! The answer, on Earth, when the Big Change really comes, will be emotional adjustment, acclimation, time. Right?" I answered Doc quickly: "You're looking for possible treachery in our nerves--opposition. Don't worry, Doc. I know every feeling you've mentioned. But the balance is all on the side of belief that progress is inevitable and good. I say this as a pretty average guy, Doc. Let Jan speak for herself." My wife smiled. "Charlie knows I agree," she said. "So let's get the show on the road...." We rose still higher in the atmosphere, to a place where the rising sun's rays were like a thin wind blowing against us. It was the pressure of light, the same thing that makes the vanes of an antique photometer spin. Gently, but with increasing speed, we were urged into space. One thing was wrong. Our Earthward course was to sunward, against that minute thrust of solar light. But there was a way to correct part of this. Accelerating with the help of the pressure, we swept around Ganymede in an orbit; we waited until our direction reversed itself, as must always happen in circular motion. Then we really built up velocity with long bursts from our rods, and tangented sunward, breaking our last tie with the Jovian moon. We were on our way. I felt my hide stiffening defensively. Over long periods we were not entirely without need of shelter in the awful spatial dryness, so we kept watch. The void is not completely empty. It contains many scattered hydrogen and helium atoms, and a rarer sprinkling of cosmic dust. We were lucky. Gleaming like a planet reflecting solar light, we saw a lump of rock moving with us toward the sun. We jetted to it and clung, laughing silently in the vacuum. Doc's lips formed the words: "More speed. Time is short. Use up the cartridges of the rods. We have more."