“Dad stepped forward. "Mr. Zelden, I'm Patrick Silver."Zelden Frowned. “It’s Doctor Zelden, if you don’t mind. I do hold a doctorate in theology, you know.”Dad gave him a stiff smile. “Of course.”Both my parents held doctorates in psychology, but they never referred to themselves as doctors. They said that title should be reserved for people who could actually save lives, not just write a thesis.”

“I'm a doctor of cowshit, pigshit, and chickenshit.....when you doctors figure out what you want, you'll find me out in the barn shoveling my thesis.”

“Dalek: I will talk to the Doctor.The Doctor: Oh will you? That's nice. Hello!Dalek: The Dalek strategem nears completion. The fleet is almost ready. You will not intervene.The Doctor: Oh really? Why's that, then?Dalek: We have your associate. You will obey or she will be exterminated. The Doctor: No.Dalek: Explain yourself.The Doctor: I said, "No."Dalek: What is the meaning of this negative?The Doctor: It means, "No."Dalek: But she will be destroyed!The Doctor: No! 'Cause this is what I'm gonna do. I'm gonna rescue her. I'm gonna save Rose Tyler from the middle of the Dalek fleet, and then I'm gonna save the Earth. And then—just to finish off—I'm gonna wipe every last stinking Dalek out of the sky!Dalek: But you have no weapons, no defenses, no plan.The Doctor: Yeah! And doesn't that scare you to death? Rose?Rose: Yes, Doctor?The Doctor: I'm coming to get you.”

“I narrowed my eyes at him. "Stuff that. I'll write a doctoral thesis. Then I can go do what most of the other people with doctoral degrees in anthropology do." "What's that?" asked Calvin."You don't need to encourage her," said Adam seriously, but his eyes laughed at me."The same thing that people with degrees in history do," I said. "Fix cars or serve frnech fries and bad hamburgers.”

“I don’t have home without him”, Carrie said when doctor asked her to go home.“I won’t give up on him. Do you hear me, Doctor? Don’t you give up on him!”

“Rose: My mum's here.The Doctor: Oh, that's just what I need! Don't you dare make this place domestic!Mickey Smith: You ruined my life, Doctor. [the Doctor turns and looks at him, irritated] They thought she was dead, I was a murder suspect because of you!The Doctor: [looks at Rose] See what I mean? Domestic!Mickey: I bet you don't even remember my name!The Doctor: Ricky.Mickey: It's Mickey!The Doctor: No, it's Ricky.Mickey: I think I know my own name!The Doctor: You think you know your own name? How stupid are you?”