Silver

“The Doctor: [hologram, speaking towards the console] This is Emergency Programme One. Rose, now listen, this is important. If this message is activated, then it can only mean one thing: we must be in danger, and I mean fatal. I'm dead, or about to die any second with no chance of escape.
Rose Tyler: No!
The Doctor: And that's OK, I hope it's a good death. But I promised to look after you, and that's what I'm doin'. The TARDIS is takin' you home.
Rose Tyler: I won't let you.
The Doctor: And I bet you're fussing and moaning now, typical. But hold on, and just listen a bit more. The TARDIS can never return for me. Emergency Programme One means I'm facing an enemy that should never get their hooves on this machine. So this is what you should do: let the TARDIS die. Just let this old box gather dust. No one can open it, no one will even notice it. Let it become a strange little thing standing on a street corner. And over the years, the world will move on, and the box will be buried. And if you wanna remember me, then you can do one thing. That's all, one thing.
The Doctor: [hologram turns to face Rose, and with a full voice] Have a good life. Do that for me, Rose. Have a fantastic life.”
― Russell T Davies

“The Doctor: Amy, what are you doing?
Amy: That gravestone, Rory's, there's room for one more name isn't there?
The Doctor: What are you talking about? Back away from the Angel. Come back to the TARDIS, we'll figure something out.
Amy: The Angel, would it send me back to the same time, to him?
The Doctor: I don't know. Nobody knows.
Amy: But it's my best shot, yeah?
The Doctor: No!
River: Doctor, shut up! Yes, yes, it is!
The Doctor: Amy—
Amy: Well then. I just have to blink, right?
The Doctor: No!
Amy: It'll be fine. I know it will. I'll be with him like I should be. Me and Rory together. {calling River over} Melody.
The Doctor: Stop it! Just, just, stop it!

Amy: You look after him. And you be a good girl and you look after him.
The Doctor: You are creating fixed time. I will never be able to see you again.
Amy: I'll be fine. I'll be with him.
The Doctor: Amy. Please. Just come back into the TARDIS, Come along, Pond. Please.
Amy: Raggedy Man, goodbye.

-Doctor Who”
― Steven Moffat

“Rose Tyler: The time war ends.
Emperor Dalek: I will not die! I cannot diieee!
[we see Rose's eyes light up, and the Dalek Emperor and his entire fleet disappear in an explosion of golden dust]
The Doctor: Rose, you've done it, now stop.
[Rose stares straight ahead]
The Doctor: Just let go.
Rose Tyler: How can I let go of this? I bring life.
[we see Jack start breathing again and open his eyes]
The Doctor: But this is wrong! You can't control life and death!
Rose Tyler: But I can. The sun and the moon, the day and night... but why do they hurt?
[she is crying]
The Doctor: The power's gonna kill you and it's my fault!
Rose Tyler: I can see everything... all that is... all that was... all that ever could be.
The Doctor: [stands up] But that's what *I* see. All the time. And doesn't it drive you mad?
Rose Tyler: [Rose nods, barely able to speak] My head...
The Doctor: Come here.
Rose Tyler: ...is killing me.
The Doctor: I think you need a Doctor.
[He leans down and kisses her, and the golden light transfers from her to him through their lips]”
― Russell T Davies

“You should always waste time when you don't have any. Time is not the boss of you. Rule 408.”
― Steven Moffat