The reason I like incorporating the Yakuza into my movies - all their actions, everything they do, you can say 'It's ok because he's a Yakuza'. Changes happen very quickly in their world. If you were trying to make a movie about politicians, it would takes years and years for something to change; whereas for Yakuzas, it could only take one night and things can change dramatically.

As a filmmaker, you've got to have a nose for what's going on culturally. You have to feel it. It doesn't have to be manga or music, but you need some kind of antenna. That's very important.

You can't really make something or make a movie and feel all through the process that it's a painful thing. It's not possible to do that.

I've been making movies for a long time. The Japanese way of making movies has become second nature to me. To get away from that, I really try to surround myself with younger staff and approach making movies not like a veteran of the industry but always as a beginner and a rookie.

You can't really change somebody completely, deep inside your nature. But I think what I did was admit to myself what kind of a person I was, and sort of get into the idea that that's who I was. And I think preserving that part of myself really helps me make movies.

Everyone has complexes about their body or their ability and skills and dream of a rebirth into something different. I myself have always had that secret desire to become something completely different and enact revenge on certain things. So I do that through my movies. My desires become reality in the movie because it can't become real in real life.

When you are completely satisfied with what you have made, you're pretty much done as a director. So when that happens, that'll sort of be the end.