Michael: This used to be my father's old study -- it's changed. I remember there used to be a big desk, right here. I remember when I was a kid, Frankie, we had to be very quiet when we played near here. I was very happy that this house never went to strangers -- first Clemenza took it over, now you. My father taught me many things here -- he taught me in this room... (then, as Michael sits beside Pentangeli) He taught me -- keep your friends close but your enemies closer.
-Mario Puzo, Al Pacino as Michael Corleone to Frank Pentangeli, from The Godfather, Part II