I always felt that if we ever encountered an alien species, they wouldn't look like us or even be humanoid, like 'E.T.'

I think if we ever encountered aliens, even communicating with them would be really, really difficult.

What Christopher Nolan and I have done with 'Superman' is try to bring the same naturalistic approach that we adopted for the 'Batman' trilogy. We always had a naturalistic approach; we want our stories to be rooted in reality, like they could happen in the same world we live in.

Superman has evolved continually in the comic books over the course of 75 years. He couldn't even fly for years in the original comic books. Kryptonite wasn't added until the '60s. All sorts of things like this. If a character is going to remain vital, he does have to change with the times.

I like telling stories of imperfect people because most people are imperfect.

No one ever told me that grief felt so like fear.