“We’re two sides of an infinitesimally thin coin. Slice the coin thinner and thinner, and we get closer and closer to each other. We can slice it arbitrarily thin, let the limit of the thickness approach zero. Slice it until there’s no one or nothing in between, until we meet at zero.”

“No matter how thin you slice it, there will always be two sides.”

“I was so thin I could slice bread with my shoulderblades, only I seldom had bread”

“She says that is exactly what she's crying about. That everything is all right. That the world isn't ending. That we'll never tell each other how we really feel because everything is okay. Okay enough to just sit around, being okay. Okay enough that we forget we don't have long, that it's late, late in this universe, and at some point in the future, it's not going to be okay.”

“The path of a man's life is straight, straight, straight, until the moment when it isn't anymore, and after that it begins to meander around aimlessly, and then get tangled, and then at some point the path gets so confusing that the man's ability to move around in time, his device for conveyance, his memory of what he loves, the engine that moves him forward, it can break, and he can get permanently stuck in his own history.”

“When you are thirteen, you spend all your time imagining what it would be like to live in a world where you could pay a robot for sex. And that sex would cost a dollar. And the only obstacle to getting that sex would be making sure you had four quarters.Then you grow up and it turns out you do live in that kind of world. A world with coin-operated sexbots. And it's not really as great as you thought it would be.”

“Who do you imagine you are? Imagine there's a version of you that sees all of it. A version that knows when versions are messing with the other ones, trying to get things off track, trying to erase things. A record of all the versions, partial and deleted and written over. All the changes. All truths about all parts of our self. We break ourselves up into parts. To lie to ourselves, to hide things from ourselves. You are not you. You are not what you think you are. You are bigger than you think. More complicated than you think. You are the only version of you that is you. There are less of you than you think, and more. There are a million versions of you, half a trillion. One for every particle, every quantum coin flip. Imagine this uncountable number of yous. You don't always have your own best interests at heart. It's true. You are your own best friend and your own worst enemy. . . . Only you know what you need to do. Imagine there is a perfect version of you. Out of all the oceans of oceans of you, there is exactly one who is perfectly you. And that's me. And I'm telling you that you are the only you.”