The actor Christoph Waltz doesn't believe in letting himself go. "I firmly believe... no, I not only firmly believe, I am more than 100 percent convinced that discipline is the beginning of everything," said the 65-year-old in Venice on Tuesday. "Discipline in thought, discipline in action, and you know what? Discipline in expressing your feelings."

The two-time Oscar winner stars alongside Willem Dafoe and Rachel Brosnahan in Walter Hill's new film Dead for a Dollar, which premieres at the Venice Film Festival on Tuesday.

Discipline would be perceived as old-fashioned, Waltz said. "I don't think it's old school. I think it's the basis of our discourse, our everyday way of communicating with each other. And why should it be any different on a film set? The idea that a film set is there so that we feeling good is absurd - to put it politely."

Director Hill is of the same opinion. It was "absolutely fantastic," but discipline is sometimes a challenge, Waltz said. "It's not always about how we feel, but sometimes about what we have to do."

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