The Doctor and Laurence Scarman in “Pyramids of Mars”

Well, Mr Scarman, I really must congratulate you for inventing the radio telescope 40 years early.

That, sir, is a Marconiscope. Its purpose is...

...is to receive radio emissions from the stars.

[beat] How could you possibly know that?

Well, you see, Mr Scarman, I have the advantage of being slightly ahead of you. Sometimes behind you, but normally ahead of you.

I see.

I'm sure you don't but it's very nice of you to try.