By the time the pile has grown to be really tempting, I won't be able to run half as fast as either of you.
4 seconds sound clip from the The Treasure of the Sierra Madre movie soundboard.
You can hear this line at 00:35:29.780 in the Blu-ray version of the movie.
Quote context
[...]
- Only a guy that's a thief at heart would think me likely to do a thing like that.
- Oh, I'm not quick on my feet any longer.
- You fellas are a lot tougher than when we started out.
- You'd get me by the collar and string me up in no time.
- That's why I think I'm the most trustworthy of the outfit.
- Looking at it that way, I guess you're right.
[...]