The human capacity for grief. It just isn't capable of providing an adequate emotional response once the dead exceed a few dozen in number. And it doesn't just level off - it just gives up, resets itself to zero.

You worry that we're becoming monsters. Merlin, we already were monsters. You didn't make us any worse.

Looking at where the planet is now, we could screw things up massively or we could wise-up on a species level and actually make things better. If I had to put my money where my mouth is, I think we'll wise up globally but there will still be outbreaks of local stupidity.

How did you . . . pass the time?’ Sunday asked. ‘You couldn’t just ching out of it, could you?’ ‘We had a different form of chinging,’ Eunice said. ‘An earlier type of virtual-reality technology, much more robust and completely unaffected by time lag. You may have heard of it. We called it “reading”.

I think I've reduced the amount of blood in my caffeine system to an acceptable level.

At one time, the treatment for a certain kind of psychosis had been to push an ice pick up through the orbit of the eye, into the frontal lobe; the ice pick was then stirred around until it reduced the problematic brain tissue to non-functioning porridge.

To see something marvelous with your own eyes-that's wonderful enough. But when two of you see it, two of you together, holding hands, holding each other close, knowing that you'll both have that memory for the rest of your lives, but that each of you will only ever hold only have an incomplete half of it, and that it won't ever really exist as a whole until you're together, talking or thinking about that moment ...that's worth more than one plus one. It's worth four, or eight, or some number so large we can't even imagine it.