“If I could tell him just one thing, wherever he is, pass him one message, it would be this: he had something. Something to his thoughts, his ideas, the papers in his notebooks, the work we did in the garage. Beyond just a purity to his ideas, a sincerity to his belief, a genuine curiosity, a determination that, if he just sat there long enough, thought hard enough, failed enough times, he'd find a way in.”

“This is what I say: I've got good news and bad news.The good news is, you don't have to worry, you can't change the past.The bad news is, you don't have to worry, no matter how hard you try, you can't change the past.The universe just doesn't put up with that. We aren't important enough. No one is. Even in our own lives. We're not strong enough, willful enough, skilled enough in chronodiegetic manipulation to be able to just accidentally change the entire course of anything, even ourselves.”

“My father built a time machine and then he spent his whole life trying to figure out how to use it to get more time. He spent all the time he had with us thinking about how he wished he had more time, if he could only have more time.”

“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.”

“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.”

“Probably it goes without saying, but time machine guys don't get a lot of action. Had a one night stand with something cute a couple of years ago. Not human exactly. Human-ish. Close enough that she looked awesome without her shirt on.”

“There must be some kind of internal time distortion effect in here, because when I look at myself in the little mirror above my sink, what I see is my father's face, my face turning into his. I am beginning to feel how the man looked, especially how he looked on those nights he came home so tired he couldn't even make it through dinner without nodding off, sitting there with his bowl of soup cooling in front of him, a rich pork-and-winter-melon-saturated broth that, moment by moment, was losing - or giving up - its tiny quantum of heat into the vast average temperature of the universe.”