- I repeat, why teach an ape to talk?
- No practical reason.
- Then why'd you do it?
- A lonely impulse of delight.
- William Butler Yeats.
- Very good.

17 seconds sound clip from the Congo (1995) movie soundboard.

You can hear this line at 00:22:32.710 in the Blu-ray version of the movie.

Quote context

[...]

- Dr. Ross, I'm sorry I called you ugly, but if I didn't...- I know. It was for Amy's benefit.

- Can I ask you something?

- Sure.

- Why teach an ape to talk?

- Why teach at all? Why teach anything to anyone? It doesn't make you rich. It doesn't get you girls.

- Why did Prometheus steal fire only to turn around and give it away?

- There's an inherent generosity in the human spirit. One of its faces is the face of the teacher.

- I repeat, why teach an ape to talk?

- No practical reason.

- Then why'd you do it?

- A lonely impulse of delight.

- William Butler Yeats.

- Very good.

- Did it work?

- What do you mean?

- You're not lonely anymore?

- Why are you going to Africa?

- To find something I lost.

- Dr. Ross! Dr. Ross!

- Hello?

- Eddie Ventro.

- Mr. Travis asked me to meet your plane, set up your expedition.

[...]