Remembered this today, for no particular reason, and got a laugh out of it. It's from "The Testing of Eric Olthwaite," an episode of Ripping Yarns, a mid-70s British series written by Michael Palin and Terry Jones of Monty Python's Flying Circus. When Eric's family runs away from home, his neighbor, Mr. Bag, must tell Eric the awful truth:

Well... look, Eric, it's like this... there are some people in life who are... you know -- interesting people -- good company, fun to be with... the kind of people who, when you meet them on the street, your heart lifts and you say to yourself: "Ah! There's old So and So! Isn't it grand to see him!" People who make you glad... people who make you fell that life's worth living... Well, you're not one of them, Eric.