In probably some 10 or 15 years from now, when I'm no longer fighting, white has got no more use for me, and black people remember what I did, and turn their backs on me, then I'm really in trouble.

12 seconds sound clip from the The Greatest (1977) movie soundboard.

You can hear this line at 00:39:39.350 in the Blu-ray version of the movie.

Quote context

[...]

- You already said that. Don't run off at the mouth, Cassius. Don't run off at the mouth!

- I'm calling off the fight!

- Oh, man. Well, call the fight off!

- I'm gonna call it off!

- To hell with you!

- At least you get to meet my people two days ahead of time. They weren't coming until Friday.

- Oh, good. I want to meet your mother.

- Yeah, she'd like to meet you, too.

- How do you know for sure, when he put it to you, that you would be giving all this up?

- When you think about it, it was simple. For me to turn down what I believe in, and my people, the black people, just to please white folks to get this fight...

- In probably some 10 or 15 years from now, when I'm no longer fighting, white has got no more use for me, and black people remember what I did, and turn their backs on me, then I'm really in trouble.

- Hey, Cash!

- Yeah?

- Angelo, what's up?

- Mr. McDonnell wants to talk to you.

- Hey, Mr. McDonnell, I'm surprised to see you.

- I thought about what you said about your right to your religious faith. That's part of the basic American principle.

- Thank you.

[...]