You're so dumb, you don't even see the riches you're treading on with your own feet!

— Howard (Walter Huston)

3 seconds sound clip from the The Treasure of the Sierra Madre movie soundboard.

You can hear this line at 00:31:35.629 in the Blu-ray version of the movie.

Quote context

[...]

- Shut your trap! Shut up or I'll smash your head flat!

- Go ahead! Go ahead! Throw it! If you did, you'd never leave this wilderness alive!

- Without me, you two would die here more miserable than rats!

- Oh, leave him alone! Can't you see that the old man's nuts?

- Nuts? Nuts, am I? Ha!

- Let me tell you something, my 2 fine bedfellows! You're so dumb, there's nothing to compare you with! You're dumber than the dumbest jackass! Look at each other, will you? You ever see anything like yourself for being dumb specimens? Ha ha ha ha...!

- You're so dumb, you don't even see the riches you're treading on with your own feet!

(Howard laughing)

- Yeah, don't expect to find nuggets of molten gold. It's rich, but not that rich. And here ain't the place to dig. It comes from someplace further up.

- Up there. Up there's where we got to go. Up there!

- Is that it?

- That's it, all right.

- The gold, I mean.

- It sure don't look like I thought it would.

- It's not much different than sand.

- Yeah, it's just like plain sand.

[...]