Willem Dafoe look uncannily like a Vincent Van Gogh self-portrait

With his ginger beard, straw hat and a sad, wounded expression, Willem Dafoe look uncannily like a Vincent Van Gogh self-portrait, as he plays the artist in a biopic that premiered at the Venice Film Festival on Monday.

"At Eternity's Gate" begins with the impoverished Van Gogh in Paris in the 1880s where his paintings are, at best, ignored and, at worst, derided as incompetent.

It follows him to the south of France, in and out of mental asylums, and ends with his death a couple of years later, at 37, with a bullet in his stomach that, in this film, is not the suicide that historians have speculated was the cause of death.

The movie is directed by Julian Schnabel, who made "The Diving Bell and the Butterfly" and is himself an artist who recreated some of Van Gogh's work for the film and helped Dafoe learn how to handle a paintbrush.

"There's a lot of painting in the movie. I had to know how to paint," Dafoe told Reuters.

"Julian is a great artist and he's a great teacher, and to have him there teaching me how to see in a new way was thrilling."

Dafoe portrays Van Gogh as a deeply lonely man who takes solace in nature and his work: "I paint to stop thinking," he says at one point.

Although he suffers blackouts and bouts of anger, his Van Gogh does not come across as mad, but certainly as someone suffering mental torment.

"He saw the value (of suffering)," Dafoe said. "He thought sickness can heal us. He appreciated it, but that's much different than the normal idea of people thinking that he's just a 'mad genius'."

Now revered as one of the greatest painters, Van Gogh famously died before his true artistic value had been recognized.

"Maybe God gave me a gift to paint for people aren't here yet," he says in the film.

Talking to a priest in a psychiatric hospital, he says: "Jesus also was totally unknown during his life... Jesus wasn't discovered until 30 to 40 years after he died."

Asked whether Van Gogh saw himself as a Christ-like figure, Dafoe, who played the lead role in Martin Scorcese's "The Last Temptation of Christ", said:

"In his letters he wrote far too much about Christ to not have identified somewhat ... He had a way of seeing that was very personal, very clean, very connected to things eternal, and he wanted to share that."

"At Eternity's Gate" is one of 21 films competing for the Golden Lion that will be awarded on Sept 8. 

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