“She idly stroked his head in the way one might stroke a dog.”

“I like dogs. You always know what a dog is thinking. It has four moods. Happy, sad, cross and concentrating. Also, dogs are faithful and they do not tell lies because they cannot talk.”

“I cared about dogs because they were faithful and honest, and some dogs were cleverer and more interesting than some people.”

“...most people are almost blind and they don’t see most things and there is lots of spare capacity in their heads and it is filled with things which aren’t connected and are silly, like, “I’m worried that I might have left the gas cooker on.”

“I think she cared more for that bloody dog than for me, for us. And maybe that's not so stupid, looking back... maybe it is easier living on your own looking after some stupid mutt than sharing your life with other actual human beings.”

“People think that alien spaceships would be solid and made of metal and have lights all over them and move slowly through the sky because that is how we would build a spaceship if we were able to build one that big. But aliens, if they exist, would probably be very different from us. They might look like big slugs, or be flat like reflections. Or they might be bigger than planets. Or they might not have bodies at all. They might just be information, like in a computer. And their spaceships might look like clouds, or be made up of unconnected objects like dust or leaves.”

“And something happened in Katie's heart, and she realized it wasn't just two people being joined together, not even two families. She felt as if she were joining hands with everyone who'd done this before her, just as she'd done after giving birth to Jacob, a feeling that she finally belonged, that she was part of the whole enterprise, a brick in that great arch which rose out of the dark behind you and swung over your head and curved into the future, and she was helping to keep it strong and solid, and helping to protect everyone beneath it.”