The Godfather1972

Vito Corleone:
[to Sollozzo] I must say no to you, and I'll give you my reasons. It's true, I have a lot of friends in politics, but they wouldn't be friendly very long if they knew my business was drugs instead of gambling, which they regard as a – a harmless vice. But drugs is a dirty business. It makes, it doesn't make any difference to me what a man does for a living, understand. But your business is, uh, a little dangerous.

Virgil "The Turk" Sollozzo:
If you're worried about security for your million, the Tattaglias will guarantee it.

Santino "Sonny" Corleone:
Oh, you're telling me that the Tattaglias guarantee our investment?

Vito:
Wait a minute. I have a sentimental weakness for my children, and I spoil them, as you can see. They talk when they should listen. But anyway, Signor Sollozzo, my "no" is final and I wish to congratulate you on your new business. I know you'll do very well, and good luck to you, especially since your interests don't conflict with mine. Thank you. [Sollozzo leaves] Santino, come here. What's the matter with you? I think your brain's going soft from all that comedy you're playing with that young girl. Never tell anybody outside the family what you're thinking again.