Dr who forth doctor quotes The Robots of Death

The Doctor: I never carry weapons. If people see you mean them no harm, they never hurt you. Nine times out of ten...

The Doctor: Well a simple "No, thank you" would have been sufficient...

The Doctor: You're a classic example of the inverse ratio between the size of the mouth and the size of the brain.

D84: Please do not throw hands at me.

Leela: Doctor?

The Doctor: Hmm?

Leela: Can I stop now?

The Doctor: If you want to.

Leela: It will not affect this?

The Doctor: Affect this? No, it's a yo-yo. It's a game; I thought you were enjoying it.

Leela: Enjoying it?! You said I had to keep it going up and down, I thought it was part of the magic!

The Doctor: Magic, Leela? Magic?

Leela: I know; I know, there's no such thing as magic.

The Doctor: That's right. To the rational mind, nothing is inexplicable; only unexplained.

Leela: So; explain to me how this, "TARDIS" is larger on the inside than the out?

The Doctor: Hmmm? Alright, I'll show you.It's because insides and outsides are not in the same dimension.Which box is larger?

Leela: That one.

The Doctor: Alright... Now, which is larger?

Leela: That one!

The Doctor: But it looks smaller.

Leela: Well, that's because it's further away!

The Doctor: Exactly! If you could keep that exactly that distance away, and have it here, the large one would fit inside the small one.

Leela: That's silly.

The Doctor: That's trans-dimensional engineering; a key Time Lord discovery!

The Doctor: I see, you're one of those boring maniacs who's going to gloat. Are you going to tell me your plan for running the universe?

Taren Capel: Oh, no, Doctor. I'm going to burn out your brain. Very, very slowly.

The Doctor: Oh, there's a mouse in the cupboard...