I wouldn’t even want so much to ask him about what he thought, though that would be interesting enough. What I would most want to learn is about how he thought.
He had so many brilliant insights into physics that it’s hard to even catalog them all. But one of his very best insights didn’t involve an equation at all. It was, rather, that if you cannot explain a concept so that it could be understood at a freshman college level, you don’t really understand it either
I would go for David Ben-Gurion.