“Okay, so the "how" works. Now we gotta figure out the "when" and the...” – Steve, Avengers: Endgame ... Movie Quotes Database

Steve: Okay, so the "how" works. Now we gotta figure out the "when" and the "where." Almost all of us has had an encounter with at least one of the six Infinity Stones.
Stark: Well, I'd substitute the word "encounter" for "damn well near been killed by" one of the six Infinity Stones.
Scott: I haven't, I don't even know what the hell you're all talking about.
Banner: Regardless, we only have enough Pym Particles for one round trip each, and these Stones have been in a lot of different places throughout history.
Stark: Our history. So, not a lot of convenient spots to just drop in.
Clint: Which means we have to pick our targets.
Stark: Correct.
Steve: Let's start with the Aether. Thor, what do you know?
Natasha: [Thor is sitting on a chair with his sunglasses on] Is he asleep?
Rhodey: No. I'm pretty sure he's dead.
Thor: [wakes up] Where to start? Umm…the Aether, first, is not a stone, someone called it a stone before. It's more of a…an angry sludge thing, so…someone's gonna need to amend that. Here's an interesting story though, many years ago…my grandfather had to hide the stones from the Dark Elves, wooooh, scary beings. So Jane… [an image of Jane Foster pops up on the screen] Oh, there she is. That's Jane. She's– an old flame of mine. She– she stuck her hand inside a rock this one time– and then the Aether stuck itself inside her. And she became very, very sick. So I had to take her to Asgard, which is where I'm from. And we had to try and fix her. We were dating at the time, you see. I got to introduce her to my mother…who's dead… [seeming on the verge of tears] …and, oh, you know, Jane and I aren't even dating anymore, these things happen though you know, nothing last forever… [Tony starts to push Thor back to his chair] I'm not done yet, the only thing permanent in life is impermanence.
Stark: Awesome. Eggs? Breakfast?
Thor: No. I'd like a Bloody Mary.
Rocket: Quill said he stole the Power Stone from Morag.
Scott: Is that a person?
Rocket: Morag's a planet, Quill was a person.
Scott: A planet? Like in outer space?
Rocket: [Mockingly] Oh, look: it's like a little puppy, all happy and everything. [starts petting Scott] Do you want to go to space? You want to go to space, puppy? I'll take you to space!
Nebula: Thanos found the Soul Stone on Vormir.
Natasha: [in a business-like tone] What is Vormir?
Nebula: A dominion of death, at the very center of Celestial existence. It's where... Thanos murdered my sister.
Scott: Not it.
Natasha: [lying on a paper-filled table] That Time Stone guy…
Banner: [lying down on the floor] Doctor Strange.
Natasha: Yeah, what kind of doctor was he?
Stark: Neuro stuff meets rabbit from a hat. Nice place in the Village, though.
Banner: Yeah. Sullivan Street. [Corrects himself] Hmm– Bleecker.
Natasha: Wait, he lived in New York?
Stark: [Sarcastically] No, he lived in Toronto.
Natasha: Guys, if you pick the right year, there are three Stones in New York.
Banner: [Sits up in surprise] Shut the front door!

Steve : Okay, so the "how" works. Now we gotta figure out the "when" and the "where." Almost all of us has had an encounter with at least one of the six Infinity Stones. Stark : Well, I'd substitute the word "encounter" for "damn well near been killed by" one of the six Infinity Stones. Scott : I haven't, I don't even know what the hell you're all talking about. Banner : Regardless, we only have enough Pym Particles for one round trip each, and these Stones have been in a lot of different places throughout history. Stark : Our history. So, not a lot of convenient spots to just drop in. Clint : Which means we have to pick our targets. Stark : Correct. Steve : Let's start with the Aether. Thor, what do you know? Natasha : [Thor is sitting on a chair with his sunglasses on] Is he asleep? Rhodey : No. I'm pretty sure he's dead. Thor : [wakes up] Where to start? Umm…the Aether, first, is not a stone, someone called it a stone before. It's more of a…an angry sludge thing, so…someone's gonna need to amend that. Here's an interesting story though, many years ago…my grandfather had to hide the stones from the Dark Elves, wooooh, scary beings. So Jane… [an image of Jane Foster pops up on the screen] Oh, there she is. That's Jane. She's– an old flame of mine. She– she stuck her hand inside a rock this one time– and then the Aether stuck itself inside her. And she became very, very sick. So I had to take her to Asgard, which is where I'm from. And we had to try and fix her. We were dating at the time, you see. I got to introduce her to my mother…who's dead… [seeming on the verge of tears] …and, oh, you know, Jane and I aren't even dating anymore, these things happen though you know, nothing last forever… [Tony starts to push Thor back to his chair] I'm not done yet, the only thing permanent in life is impermanence. Stark : Awesome. Eggs? Breakfast? Thor : No. I'd like a Bloody Mary. Rocket : Quill said he stole the Power Stone from Morag. Scott : Is that a person? Rocket : Morag's a planet, Quill was a person. Scott : A planet? Like in outer space? Rocket : [Mockingly] Oh, look: it's like a little puppy, all happy and everything. [starts petting Scott] Do you want to go to space? You want to go to space, puppy? I'll take you to space! Nebula : Thanos found the Soul Stone on Vormir. Natasha : [in a business-like tone] What is Vormir? Nebula : A dominion of death, at the very center of Celestial existence. It's where... Thanos murdered my sister. Scott : Not it. Natasha : [lying on a paper-filled table] That Time Stone guy… Banner : [lying down on the floor] Doctor Strange. Natasha : Yeah, what kind of doctor was he? Stark : Neuro stuff meets rabbit from a hat. Nice place in the Village, though. Banner : Yeah. Sullivan Street. [Corrects himself] Hmm– Bleecker. Natasha : Wait, he lived in New York? Stark : [Sarcastically] No, he lived in Toronto. Natasha : Guys, if you pick the right year, there are three Stones in New York. Banner : [Sits up in surprise] Shut the front door!