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”.

As the old saying went, the Manhattan Project wasn't built in a day. Or was that Rome? Something to do with Earth, anyway.

I really struggle to pinpoint whether I became a scientist because I like science fiction, or did I gravitate to science fiction because I identified strongly with scientists.

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.

It's an ancient technique known as lying, Khouri.

Without risk in our lives, we're scarcely better than machines ourselves.

It’s the people who don’t worry—those who never have any doubts that what they’re doing is good and right—they’re the ones that cause the problems.