The Man Who Awoke by Laurence Manning

And so the ancient and yet youthful Winters set off for a month's cruise during which he haphazardly circumnavigated the globe. When he was hungry or thirsty, a push on a button produced food and drink. When the fuel dial showed red-as it did once over the Indian Ocean-he descended to the surface of the water and pulled the intake lever, whereupon the suction tanks filled themselves with enough brine to keep the atomic motors running powerfully for a month. When he wished to sleep, he landed his ship and stretched out on the bunk at the back of the cabin.

He visited some large cities and found everyone excited over the prospect of human immortality. No old people were left anywhere, for these had all proceeded to the laboratory near Lake Superior to restore their youth. But the young men and women were revising their entire mental outlook upon a larger scale. No longer was there a problem about "what to do with one's life." Life could-barring accidental injuries-continue forever. Therefore each person was proceeding to do whatever he or she happened to want at the moment. He found one man contemplating the idea of breeding dwarf humans and selecting for dwarfness generation after generation until he had beings of microscopic size. "It might take a million years-or ten million," said this calm dreamer. "What difference does time make now?"