Yes, this topic has been discussed before, but not recently. My money goes on Hyman Roth, by far the most clever and subtle of the Corleone foes. His intelligence and resiliency made him far more dangerous than the others.
Ntra la porta tua lu sangu � sparsu, E nun me mporta si ce muoru accisu... E s'iddu muoru e vaju mparadisu Si nun ce truovo a ttia, mancu ce trasu.
