How much of Sacha Baron Cohen is in Ali G?

Does Sacha Baron Cohen bring any element of himself into characters like Ali G, Borat and Bruno? "If I knew who I was, then I could answer that.

But I don't know.

I mean, Ali G definitely, because in a way, at the age of 11, I was an Ali G of sorts," Baron Cohen says.

This Sunday, the actor sits down with 60 Minutes' Ariel Levy.