Immortality,' said Crake, ' is a concept. If you take 'mortality' as being, not death, but the foreknowledge of it and the fear of it, then 'immortality' is the absence of such fear. Babies are immortal. Edit out the fear, and you'll be...
Oryx And Crake (ed. Hachette UK, 2009) - ISBN: 9780748113354