Seth Todtman and Dr. James Martin in “Unfinished Business”

I mean, haven't you ever wondered why there isn't any intelligent life in the universe?

Excuse me?

Oh, come on, Martin, all those years listening to the stars and not a peep? No I Love Lucy with two-headed green guys playing both Lucy and Ricky? No radio signals at all, you know why?

No, I don't.

Because they get to this point, where you and I are today, and they discover the energy weapon that any child can build, and then they destroy themselves.

I can't accept that, I don't believe you can either.

Before this day's over, you will.