"The day had started badly. In the console room aboard the TARDIS lay a disorientated body ragged with pain. It was me, in an earlier regenerative form. It was also the time of my first regeneration, the event that is both a blessing and a scourge of the Time Lords of Gallifrey. Some Time Lords are able to proceed through their allotted twelve lives with grace, dignity, and élan; growing older, wiser, and more handsome with each change. Others are less fortunate, as my first metamorphosis proved: One moment a distinguished, white-haired gentleman, and the next, well, not what I would have wished for myself, but at least I was alive. Just."
— The Doctor, the audio reconstruction of "The Power of the Daleks"
Third Doctor: Jo, it's all quite simple — I am he as he is me.
Jo Grant: [bemused] "And we are all together, coo coo cachoo?"
Third Doctor: What?
Jo Grant: It's a song by the Beatles.
Second Doctor: Oh? [fingering his recorder] How does it go?
Third Doctor: Oh, please be quiet!
Jo Grant: [bemused] "And we are all together, coo coo cachoo?"
Third Doctor: What?
Jo Grant: It's a song by the Beatles.
Second Doctor: Oh? [fingering his recorder] How does it go?
Third Doctor: Oh, please be quiet!
— "The Three Doctors''
"So you're my replacements... a dandy and a clown."
— The First Doctor on the Third and Second Doctors, "The Three Doctors" (again)
"Time Lords have this little trick. It's sort of a way of cheating death, except... it means I'm gonna change. And I'm not gonna see you again. Not like this, not with this daft old face."
— The Ninth Doctor, explaining regeneration to Rose Tyler, "The Parting of the Ways"
Harriet Jones: Well, what happened to my Doctor? Or is it a title that's just passed on?
Tenth Doctor: I'm him. I'm literally him. Same man, new face. Well, new everything!
Tenth Doctor: I'm him. I'm literally him. Same man, new face. Well, new everything!
Oracle: So. Do you recognize me?
Neo: A part of you.
Oracle: Yeah, that's how it works. Some bits you lose, some bits you keep. I still don't recognize my face the mirror, but...I still love candy.
Neo: A part of you.
Oracle: Yeah, that's how it works. Some bits you lose, some bits you keep. I still don't recognize my face the mirror, but...I still love candy.
"I laid down on that operating table one person, and I woke up a completely different person. Well, I should say eight different people."
— Ezri Dax, Star Trek: Deep Space Nine
"Tal accepted each of us. Joining made us more than we could ever be alone. And while a human joining is unusual, Tal accepts you as well."
— Senna Tal to Adira Tal, Star Trek: Discovery
"I am Kasha Tal, Jovar Tal, Madela Tal, Cara Tal, Senna Tal, Gray Tal... and I am Adira Tal."
— Adira Tal, Star Trek: Discovery
"So in this story, Uta has an accident, then he has a plastic surgery. Now, I can simply change his actor. Easy, isn't it?"
— Akbar, Mimpi Metropolitan