Columbo: The Bye-Bye Sky High I.Q. Murder Case

Lt. Columbo:
You know, sir, it's a funny thing. All my life I kept running into smart people. I don't mean smart like you or the rest of the people in this house. You know what I mean. In school, there were a lot of smarter kids. And when I first joined the force, they had some very clever people there. And I could tell right away that it wouldn't be easy to make detective as long as they were around. But I figured, if I worked harder than they did, put in more time, read the books, kept my eyes open, maybe I could make it happen. And I did. And I really love my work, sir.

Oliver Brandt:
I can tell you do.

Lt. Columbo:
Here I've been talking with the most intelligent people in the world, and I never even noticed!