As for him having a personal weakness... He has none, there are no vices, there's no woman at the moment.
9 seconds sound clip from the Champagne for Caesar movie soundboard.
You can hear this line at 00:37:01 in the DVD version of the movie.
Quote context
[...]
- Happy boy, I knew you'd do it, how did it go?
- Fine.
- It was your idea and it turned out great.
- What's the score, Happy boy?
- What are you telling me, boy? Why are you letting me shake your hand?
- His sister wants him to stop.
- Oh, great, great that old Hogan touch. Sit down, you convinced him?
- Well I didn't have to, you see she's felt this way all along.
[...]