Senator Pat Geary: [as they're watching the performer at the sex club] Freddie, that thing can't be real.
Fredo Corleone: Sure it is. That's why they call him Superman.
Michael Corleone: I'll change; I'll change. I've learned that I have the strength to change.
Hyman Roth: What I am saying is, we have now what we have always needed, real partnership with the government.
Hyman Roth: Stupid thugs. People behaving like that with guns.
Hyman Roth: This is the business we've chosen.
Frank Pentangeli: Those were the great old days,you know... And we was like the Roman Empire... The Corleone family was like the Roman Empire...
Hyman Roth: I want all of you to enjoy your cake, so... enjoy.
Hyman Roth: I loved baseball ever since Arnold Rothstien fixed the World Series in 1919.
Hyman Roth: I don't trust a doctor who can hardly speak English.
[When asked by reporters why he has decided to move to Israel]
Hyman Roth: I am a retired investor on a pension, and I wished to live there as a Jew in the twilight of my life.
Santino: Whatcha go to college? To get stupid? You're really stupid!
Tom Hagen: Why do you hurt me, Michael? I've always been loyal to you.
Kay: I suppose I always knew you were too smart to let any of them ever beat you.