When someone with that face works with his gun, you may count on two things. He's fast on the trigger, but he's also intelligent.
8 seconds sound clip from the A Fistful of Dollars movie soundboard.
You can hear this line at 00:30:43 in the Blu-ray version of the movie.
Quote context
[...]
- Now, why are you so hasty? You should stay here. You might enjoy dining with us tonight.
- I don't like that americano. He's too smart to be just a hired fighter.
- At shooting a pistol no one can touch him.
- That makes him too dangerous for you, I think, my brothers.
- Is it possible, old fellow, that you'll never be able to reach any conclusions on your own?
- They'll investigate, all right, and we'll be quiet and peacefully abide our time.
[...]