At the most simplistic level physicists tell us that what we see as reality is not actually accurate. A rock looks solid to us but it's full of empty space and atoms moving and we see it as solid because we need to because it helps us survive, right? Survival being our goal. You can extrapolate that to many other things.

("Let's stand under a tree," she said. "Why?" "Because it's nicer." "Maybe you should sit on a chair, and I'll stand above you, like they always do with husbands and wives." "That's stupid." "Why's it stupid?" "Because we're not married." "Should we hold hands?" "We can't." "But why?" "Because, people will know." "Know what?" "About us." "So what if they know?" "It's better when it's a secret." "Why?" "So no one can take it from us.")

And if the man who once upon a time had been a boy who promised he'd never fall in love with another girl as long as he lived kept his promise, it wasn't because he was stubborn or even loyal. He couldn't help it.

Without memories to cloud it, the mind perceives with absolute clarity. Each observation stands out in stark relief. In the beginning, when there's not yet a smudge, the slate still blank, there is only the present moment: each vital detail, shocked color, the fall of light. Like film stills. The mind relentlessly open to the world, deeply impressed, even hurt by it: not yet gauzed by memory.

The idea that we've outgrown ends up limiting us and we have to make a choice about what we're going to do in our lives.

The clarity was startling and Samson wondered whether he was imagining these moments. Not that they hadn't happened at all, but that they had been embellished by details from elsewhere, fragments that survived the obliteration of other memories, vagrant data that gravitated and stuck to what was left to remember. But in the end he rejected this idea. The memories were too perfect: take one detail away and they collapsed into disorder.

Sometimes I get the feeling that we're just a bunch of habits. The gestures we repeat over and over, they're just our need to be recognized. Without them, we'd be unidentifiable. We have to reinvent ourselves every minute.