With any actor, if you know your character well enough, you'll know pretty much what he would say under any circumstance, or whatever situation might rear its head.
“My advice to anyone adapting a novel is that once they've read it and learnt to understand it, then they must throw it away and never look at it again!”
“Everyone has a budget, I don't care who you are. But they said if we are in a pennant race in the middle of the summer they are going to get some help with added payroll.”