Barry Allen: I eat a lot of snacks. I'm like a black hole of snacks...I'm a snackhole.
Menalippe: The arrow hasn't been shot in five thousand years. Men won't know what it means.
Queen Hippolyta: Men won't. She will.
Diana Prince: You wanted me to be a leader. But leaders get people killed. So I follow, always.
Victor Stone: Does anybody know?
Silas Stone: What?
Victor Stone: At the lab. Does anybody know I'm alive?
Silas Stone: Uh... I didn't think you were ready for them to...
Victor Stone: To what? For them to see the monster?
Silas Stone: You are not a monster.
Victor Stone: It's weird that you thought I meant me.
Bruce Wayne: I wouldn't count of the tribes of men. We tend to act like the doomsday clock has a snooze button.
Superman: I'm glad I'm alive to see this!
Wonder Woman: Me too.
Batman: Oh, now you're glad.
Bruce Wayne: Superman was a beacon to the world. He didn't just save people, he made them see the best parts of themselves.
Diana Prince: You should move on from mourning for your parents.
Bruce Wayne: You're one to talk, you ran away for a hundred years because your boyfriend died.
Steppenwolf: No protectors here. No Lanterns. No Kryptonian. This world will fall, like all the others.
Bruce Wayne: The world needs Superman... the team needs Clark. He's more human than I am. He lived in this world, fell in love, had a job. In spite of all that power.
Barry Allen: Look man, I don't know who you are, but whoever you're looking for...
[Bruce throws a batarang at Barry, who steps back with super-human speed.]
Bruce Wayne: So you're fast.
Barry Allen: That feels like an oversimplification.
Clark Kent: How did you get the house from the bank?
Bruce Wayne: I bought the bank. All of it.
Bruce Wayne: I'm putting together a team of people with special abilities. See, I believe enemies are coming...
Barry Allen: Stop right there. I'm in.
Bruce Wayne: You are? Just like that?
Barry Allen: Yeah, I... I need... friends.
Bruce Wayne: Agreed.
Barry Allen: [Holds up batarang.] Can I keep this?
Barry Allen: What are your superpowers again?
Bruce Wayne: I'm rich.
Answer: He comes from a technologically advanced planet, he been to thousand of other words with the same advancements. In the comic book universe, Earth is still a backwater planet. As far as the other aliens were concerned it was the dark ages.