The Time Machine (2002)
Über-Morlock: We all have our time machines, don't we. Those that take us back are memories... And those that carry us forward, are dreams.
Über-Morlock: You built your time machine because of Emma's death. If she had lived, it would never have existed. So how could you use your machine to go back in time and save her? You are the inescapable result of your tragedy, just as I am the inescapable result of you. You have your answer. Now go.
Über-Morlock: Who are you to question 800,000 years... of evolution?
Alexander Hartdegen: This is, this is a perversion of every natural law.
Über-Morlock: [grabs him by the throat] And what is time travel but your pathetic attempted to try to control the world around you? Your futile effort to have a question answered? You think I don't know you, Alexander? I can look inside your memories, your nightmares, your dreams. You're a man haunted by those two most terrible words: What if?
Alexander Hartdegen: My question is why can't one change the past?
Vox: Because one cannot travel into the past.
Vox: Can you even imagine what it's like to remember everything? I remember this six-year-old girl who asked me about dinosaurs 800,000 years ago. I remember the last book I recommended: Look Homeward, Angel by Thomas Wolfe. And yes, I even remember you. "Time travel, practical application."
David Philby: Nothing can change what happened.
Alexander Hartdegen: No, you're wrong. Because I will change it.
Teacher: If you do that again, I will re-sequence your DNA.
Alexander Hartdegen: You're forgetting one thing. What if?
Alexander Hartdegen: I could come back a thousand times... and see her die a thousand ways.
Alexander Hartdegen: How did this happen?
Soldier #1: The moon. Come on, move it.
Alexander Hartdegen: That's impossible. What happened?
Soldier #1: What, you been living under a rock?
Alexander Hartdegen: Yes, I've been living under a rock! Now tell me...
Soldier #1: The demolitions for the lunar colony screwed up the orbit, okay? The moon's breaking up, all right? Now, come on.
Alexander Hartdegen: You were right, Philby. We did go too far.
David Philby: [looking at a futuristic picture] I wonder if we'll ever go too far.
Alexander Hartdegen: With what?
David Philby: [pointing at the picture] With this. With all of this.
Alexander Hartdegen: No such thing.
Alexander Hartdegen: Hello.
Jogger: Nice suit. Very retro.
Alexander Hartdegen: Thank you.
Jogger: Bet that makes a hell of a cappuccino. That thing.
Vox: [an image of Vox appears] Welcome. How may I help you?
Vox: [Alexander Hartdegen looks behind Vox] Over here.
Mara: Why have you come here? Why have you traveled through time?
Alexander Hartdegen: To have a question answered.
Mara: A question?
Alexander Hartdegen: Yes. Why can't I change the past?
Mara: Why would you want to?
[a look of realization]
Mara: You've lost someone. Someone you loved very much.
David Philby: A professor from Columbia University should not be corresponding with a crazy German book keeper.
Alexander Hartdegen: He's a patent clerk, not a book keeper, and I think Mister Einstein needs all the support I can give him.