"The concept of dreaming is known to the waking mind but to the dreamer there is no waking, no real world, no sanity; there is only the screaming bedlam of sleep."

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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.

— Margaret Atwood