When Yorke asks Cumberbatch if he ever feels “out of depth” after taking on a role. He responds, “Lots of times. But if you can’t fail, you can never get better. And these weren’t total failures, these enterprises, but there was a lot that wasn’t right about them. One of the first roles I had on stage was with a brilliant director in a brilliant play with a brilliant cast, but I just couldn’t find my way into the heart of the character. I found myself straining a lot.”
Cumberbatch continues by providing a specific example of when he felt lost at the start of working on a character. He says, “I felt lost. That was [the Eugène Ionesco play] Rhinoceros. I don’t mind saying the name, because I’ve talked about it. It was partly because of where my head was at, and it was a big leap of discipline. I don’t think I was prepared for that. I don’t think I had the full tool kit to do it justice. It’s a very difficult play, it’s an extraordinarily difficult part, and I never felt I really got it right. Far from it. To a degree, Hamlet was the same. But not to do with the production or anything else—the challenge of doing that night after night was just the most extraordinary.”
(via)