Every episode [in a TV series] is a challenge, and what's challenging in most episodes is the monster. You're always a heartbeat from the monster looking ridiculous. You really have to work so hard to make them not look like ridiculous when they turn up on the set.
Steven MoffatYou can be as beautiful and charming as you'd like, but if you're not terrific at acting, it will mean nothing on the screen.
Steven MoffatSherlock Holmes becomes more human and more adept at fitting in with a lot of people, but he remains separate from the human race because he finds that a better place to observe that from. He stays on the mountain top because there, he can see clearly.
Steven Moffat