How we cite our quotes: All quotations are from Spider-Man.
Quote #1
PETER: I read all your research on nanotechnology. Really brilliant.
NORMAN: You understood it?
PETER: Yes, I wrote a paper on it.
NORMAN: Impressive. Your parents must be very proud.
PETER: I live with my aunt and uncle, and they are proud.
TEACHER: Hey, you two! Let's move!
PETER: Nice to meet you.
NORMAN: Hope to see you again.
Oh, they'll see each other again. They'll see each other, punch each other, and roundhouse kick each other in the face. This is the moment where good first meets evil and, oddly enough, these two nerds for nanotech have a lot in common.
Quote #2
HARRY: What was that thing?
PETER: I don't know. Whatever it is, somebody has to stop it.
Yup, that somebody is Peter in the guise of Spider-Man. He's the only one who can stop the Green Goblin, whose capacity for evil is enormous—and aided by fancy military tech.
Quote #3
GREEN GOBLIN: You're an amazing creature, Spider-Man. You and I are not so different.
SPIDER-MAN: I'm not like you. You're a murderer.
GREEN GOBLIN: Well, to each his own. I chose my path; you chose the way of the hero. And they found you amusing for a while, the people of this city. But the one thing they love more than a hero is to see a hero fail, fall, die trying. In spite of everything you've done for them, eventually, they will hate you. Why bother?
SPIDER-MAN: Because it's right.
The Green Goblin and Spider-Man lay out their mission statements here. The Goblin's is lengthy, but it boils down to this: "people are the worst. You can work your butt off for them, but, ultimately, they're going to turn on you because that's what happened to me at my job."
Spider-Man's statement, on the other hand, is short and to the point: "helping people is the right thing to do." It's not as verbose or flashy as Gobby's, but it gets his point across. Spider-Man's goodness is fueled by a desire to do the right thing. The Green Goblin is evil because he believes he was horribly wronged.