I always do casting for every role, even if it's just one sentence. I like to work with theater actors because they're used to a process. I think filmmaking sometimes can become so stiff. Sometimes I have the feeling that people come together praying in the morning that, "Let's just shoot something, no matter what! Let's just finish this day, no matter what we will tape!"

Father-daughter has a lot of layers, I find.

I always do casting for every role, even if it's just one sentence. I like to work with theater actors because they're used to a process. I think filmmaking sometimes can become so stiff. Sometimes I have the feeling that people come together praying in the morning that, "Let's just shoot something, no matter what! Let's just finish this day, no matter what we will tape!"

A family is something very static and hard to escape, so everybody has a certain role over the years, no matter if you like it or not.

I had the feeling I had to stay focused on what's lying under. A big part of the story in Toni Erdmann happens on the sub-level. On the surface, a lot of scenes, it's banal. If the actor starts thinking, "Oh, I'm in a genre, I'm doing a comedy, I'm doing funny things," then you lose.

For me, it was always clear that Toni Erdmann is more a film about what globalization, capitalism, does with private relationships much more than making a "political" film. It's more interesting to raise questions, because I don't feel in a position to "make a statement" with the film. Toni Erdmann comes from a completely different generation then his daughter, it's the post-war generation, they were very politically engaged. They raised their children with a lot of human worldviews, sent them out in the world believing in a world without borders.

You can change so many things in your life, but you cannot change where you come from. It's something that you have to deal with: the role everybody plays in his family, no matter if he likes it or not.