Le samouraï (1967)

"There is no greater solitude than that of the samurai,
unless it is that of the tiger in the jungle... perhaps..."
Bushido
(Book of the Samurai)

Jef Costello: I never lose. Not really.

Le Commissaire: Do you recognize anyone?
Wiener: I have a composite image of the man I passed... A trench coat like that one... A hat like this one... or that one... And a face like his.
Le Commissaire: Just imagine if you were observant!

1er inspecteur: What do you think about Costello?
Le Commissaire: I never think.

1er inspecteur: His alibi is airtight.
Le Commissaire: Too airtight.

Le Commissaire: Wiener's absolutely sincere... but I'm sure the girl's lying. We have to break her so she talks. Then the DA can slap a perjury charge on her. And little Jef Costello... will be sitting in this chair.
1er inspecteur: He'll just laugh in our faces.
Le Commissaire: I doubt it. Ever see a guy stay handcuffed for 48 hours and not open his mouth? I haven't seen many.

Le Commissaire: You have my word. Nothing will happen... I knew you were a smart girl.
Jane Lagrange: In other words, you want me to perjure myself, in return for which I'll be left alone. But if I stick to the truth and get in your way, then I won't hear the end of it. Is that it?
Le Commissaire: Not quite. The truth is not what you say. It's what I say... whatever the methods I have to use to get it. So then... is it yes?

Jef Costello: I never talk to a man holding a gun.
Is that a rule?
Jef Costello: A habit.

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+ Quotes on the IMDb