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.

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.

The cards always look different when it's your turn to play them; loaded with subtly different possibilities.

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.

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.

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

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