“Existence doesn't have more meaning in one direction than it does in any other.”

“Living like this means you don't have a container anymore for the different days, can't hold in a little twenty-four-hour-sized box set of events that constitute a unit, something you can compartmentalize, something with a beginning and an end, something to fill with a to-do list. Living like this means that it all runs together, a cold and bright December morning with your father or a lazy evening in late August, one of those sunsets that seem to take longer than is possible, where the sun just refuses to go down, where the hour seems to elongate to the point that it doesn't seem like it can stretch any farther without detaching completely from the hour before it, like a piece of taffy, like under sea molten lava forming a new island, a piece of time detaching from the seafloor and floating up to the surface.”

“She used her heart to love him, not her head, not her words and not her thoughts or ideas or feelings or any other vehicle or object or device people use to deliver love or love-like things. She used her heart, as a physical transmitter of love, and what came out of it was no more voluntary than gravity or time or time travel or the laws of fictional science itself.”

“The only free man," he would say, "is one who doesn't work for anyone else.”

“I don’t have many friends. TAMMY, I guess. Her soul is code, is a fixed set of instructions, and although you might think having a relationship with someone like that would get boring after a while, it doesn’t. TAMMY’s AI is good. Really good. She’s smarter than I am, by a mile, by an order of magnitude. In all the time I’ve known her, TAMMY’s never said the same thing to me twice, which is more than you can ask from most human friends. Plus, I have Ed for petting and body heat. I think that probably sounds more yucky than it really is.”

“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.”

“For a while, I thought I might be in a love story, but I hardly ever wake up next to anyone anymore. It still happens once in a while. When it does, the first thing I do, doesn't matter where I am, in the ocean, on the moon of some minor distant planet, doesn't matter where, doesn't matter if she knows who I am of if I know who she is or how strong gravity is or if I feel terrible or if the world is logically impossible, the first thing I do if she's there, is I tell her how nice it is to see her.”