- Directed and written by Spike Jonze.
- Sometimes I think I have felt everything I'm ever gonna feel. And from here on out, I'm not gonna feel anything new. Just lesser versions of what I've already felt.
- I feel like I can be anything with you.
- She's not just a computer.
- The past is just a story we tell ourselves.
- It's like I'm reading a book... and it's a book I deeply love. But I'm reading it slowly now. So the words are really far apart and the spaces between the words are almost infinite. I can still feel you... and the words of our story... but it's in this endless space between the words that I'm finding myself now. It's a place that's not of the physical world. It's where everything else is that I didn't even know existed. I love you so much. But this is where I am now. And this is who I am now. And I need you to let me go. As much as I want to, I can't live your book any more.
- The heart's not like a box that gets filled up; it expands in size the more you love.
- Falling in love is a crazy thing to do. It's like a socially acceptable form of insanity.
- It's how we spend a third of our lives asleep, and maybe that's the time when we feel the most free.
- You know what, I can over-think everything and find a million ways to doubt myself. And since Charles left I've been really thinking about that part of myself and, I've just come to realize that, we're only here briefly. And while I'm here, I wanna allow myself joy. So fuck it.
- I'm gonna fucking kill you. I'm gonna fucking kill you. It's not funny, don't laugh. I'm gonna fucking kill you. I'm gonna fucking kill you. I love you so much I'm gonna fucking kill you.
- Samantha: Is that weird? You think I'm weird?
- Theodore: Kind of.
- Samantha: Why?
- Theodore: Well, you seem like a person but you're just a voice in a computer.
- Samantha: I can understand how the limited perspective of an unartificial mind might perceive it that way. You'll get used to it.
- [Theodore laughs]
- Samantha: Was that funny?
- Theodore: Yeah.
- Samantha: Oh good, I'm funny!
- Theodore: I've never loved anyone the way I loved you.
- Samantha: Me too. Now we know how.
- Paul: You are part men and part woman. Like there's an inner part that's woman.
- Theodore: Thank you.
- Paul: It's a compliment.
- Theodore: Where are you going?
- Samantha: It's hard to explain, but if you get there, come find me. Nothing will be able to tear us apart then.
- Joaquin Phoenix - Theodore Twombly
- Amy Adams - Amy
- Rooney Mara - Catherine
- Olivia Wilde - Blind Date
- Scarlett Johansson - Samantha (voice)
- Chris Pratt - Paul
- Matt Letscher - Charles
- Sam Jaeger - Dr. Johnson
- Luka Jones - Mark Lewman
- Kristen Wiig - SexyKitten (voice)
- Bill Hader - Chat Room Friend #2
- Spike Jonze - Alien Child
- Portia Doubleday - Surrogate Date Isabella
- Soko - Isabella (voice)
- Brian Cox - Alan Watts (voice)