Dr who forth doctor quotes Horror of Fang Rock

The Doctor: The localised condition of planetary atmospheric condensation caused a malfunction in the visual orientation circuits. Or to put it another way, we got lost in the fog.

The Doctor: Now I remember: Ruban the Rutan!

Rutan: You know our form?

The Doctor: Well, when you've seen one Rutan, you've seen them all.

Rutan: We are a Rutan scout. We are specially trained in the new metamorphosis techniques.

The Doctor: Well, I expect you'll get better at it in time. What are you doing in this part of the galaxy, anyway?

Rutan: That doesn't concern you! You are to be destroyed.

The Doctor: Got it. You're at last losing that interminable war with the Sontarans.

Rutan: That is a lie!

The Doctor: Is it? You used to own the whole of the Mutter's Spiral once. Now the Sontarans have driven you to the farthest fringes of the galaxy.

Rutan: The glorious Rutan army is making a series of strategic withdrawals, at selected strongpoints.

The Doctor: Rutan, that's the empty rhetoric of a defeated dictator, and I don't like your face either.

Rutan: Your mockery will end with your race, Earthling, when the mighty Rutan Battlefleet occupies this planet.

The Doctor: Why invade an obscure planet like Earth? It's of no value to you.

Rutan: The planet is obscure. But its strategic position is sound. We shall use it as a launch point for our final assault on the Sontaran rabble.

The Doctor: But if you set up a power base here, the Sontarans will bombard it with photonic missiles.

Rutan: That is unimportant. It will serve the course of our final, glorious victory.

The Doctor: And what about its people?

Rutan: Primitive bipeds of no value. We scouted all the planets of this solar system - only this one suits our purpose.

The Doctor: I can understand your motive and purposes, but why murder a handful of harmless humans?

Rutan: It is necessary! Until we return to our Mothership, and the Mothership informs the fleet, no one must know of our visit to Earth.

The Doctor: But you crashed, didn't you? Just as you made your discovery, you failed!

Rutan: Failed? We are sending a signal to the Mothership, with a powerful, though primitive, mechanism below.

The Doctor: You're not, you know.

Rutan: It's of no importance. The ship will home in on the primary signal.

The Doctor: I'm sorry to disappoint you. I fixed that as well, oyster-face.

Rutan: All your interference is useless! The beam was transmitted - long enough for the Mothership to trace the signal.

The Doctor: You can't be certain of that.

Rutan: It will come.

The Doctor: But by then, you'll be dead!

Rutan: What could you Earthlings possibly do to us?

The Doctor: Well, if you'll just step this way, I'll show you..