- Did you know that every blade of grass has an energetic force that has never been used for anything?
- No.
- Oh, yes.

7 seconds sound clip from the You Can't Take It with You (1939) classic radio play.

You can hear this line at 00:27:11 in the radio play.

Quote context

[...]

- Well, now I know why you're so different!

- You know, I think that your family is the answer to what's wrong with the world.

- People spend their lives building castles in the air and yet they never try to make 'em realities.

- You know, in school, another fellow and I had an idea... Oh, uh, do you mind if I sort of talk about myself?

- I'd love it.

- Well, this fellow and I had an idea how to utilize the energy in grass. You know, grass... just like this.

- Did you know that every blade of grass has an energetic force that has never been used for anything?

- No.

- Oh, yes.

- Well, we worked on it all the time. Every spare moment. All night sometimes. We'd get so excited, we'd forget to sleep.

- And... well... then we left school. He's selling automobiles and I'm in some mysterious thing called Banking.

- Why don't you...?

- No, don't... don't say it. Don't say it. I know what you're thinking.

- The Kirbys come from a long line of bankers... and the line simply must not be broken.

[...]