The one thing I've said to [Donald Trump] directly, and I would advise my Republican friends in Congress and supporters around the country, is just make sure that, as we go forward certain norms, certain institutional traditions don't get eroded, because there's a reason they're in place.
It's important for people to try and be more like Marco Polo in how he explored the world, very few of us nowadays pay attention to cultures and try to understand them.