- He's a slim customer.
- Excuse me?
- A clever man.
- Slim customer. It's very good.

— Jackson Bentley (Arthur Kennedy)

10 seconds sound clip from the Lawrence of Arabia movie soundboard.

You can hear this line at 02:26:05 in the Blu-ray version of the movie.

Quote context

[...]

- Myself... I am going to Cairo. As you know.

- Yes.

- There's work for me there of a different kind.

- I understand you've been given no artillery.

- That is so.

- You're handicapped?

- It restricts us to small things.

- It's intended to.

- Do you know General Allenby?

- Watch out for Allenby.

- He's a slim customer.

- Excuse me?

- A clever man.

- Slim customer. It's very good.

- I'll certainly watch out for him. You're being very sympathetic.

- Your Highness, we Americans were once a colonial people, and we naturally feel sympathetic to any people anywhere who are struggling for their freedom.

- Very gratifying.

- Also, my interests are the same as yours. You want your story told. I badly want a story to tell.

- Ah, now you are talking turkey, are you not?

[...]