Kevin Costner has never given up on his search for the people who he reckons are the most “difficult to find”: the ones “who think outside the box”. He looked for them — futilely yet persistently — when he first called himself an actor and hoped that someone would hire an ambitious college graduate without a single acting credit on his CV.

He broke just about every Hollywood rule when he produced, directed and starred in “Dances with Wolves”, the more than three hour-long western epic he had been repeatedly warned against, and it won him an Academy Award for best director, the respect of the film-making community and tens of millions of dollars.

He then defied all modern trends in his business, choosing non-commercial — and often unattractive by many standards — roles, some of which provoked harsh criticism and doubts about his talent. He has invested more than $20m in businesses that haven’t made him a dime, and has been trying for years to build a luxurious resort in the Black Hills of South Dakota, against the will of the Sioux Indians…