When I sit down to write, I don't think about writing about an idea or a given message. I just try to write a story which is hard enough.
All good actors are very bright. You can't be stupid and a good actor. You may be inarticulate, you may not be highly educated, but all good actors are quick-witted, some of them dazzlingly so. All you do is guide them.
It's like a novelist writing far out things. If it makes a point and makes sense, then people like to read that. But if it's off in left field and goes over the edge, you lose it. The same with musical talent, I think.