[Didn't he explain this already... Does he have to explain it again?]
I should. [He sips his tea, considers, sips again.] As I've told you, there is still unfinished business between us. If you were to ask my grandfather... or my father, [you know, if he wasn't DEAD] they would agree I should have left you behind.
[Which he kind of did, but not for dead. They're here in Italy, and Leon is very much not dead.]
walks out
I should. [He sips his tea, considers, sips again.] As I've told you, there is still unfinished business between us. If you were to ask my grandfather... or my father, [you know, if he wasn't DEAD] they would agree I should have left you behind.
[Which he kind of did, but not for dead. They're here in Italy, and Leon is very much not dead.]
You have a nasty habit of defying expectations.