'We're very close to immortal, you know. The time mechanism keeps it that way.' 'No, I hadn't known,' said Boone. 'Inside the time bubble we do not age. We age only when we are outside of it.'

A wrongness persisted, a sense of aberration, some factor not quite right, the feeling of a corner. But Boone could not pin it down; there seemed no way to rea…

'They changed,' said Enid, 'from corporeal beings, from biological beings, to incorporeal beings, immaterial, pure intelligences. They now are ranged in huge c…

If mankind were to continue in other than the present barbarism, a new path must be found, a new civilization based on some other method than technology.