‘At Eternity’s Gate’ features career-best Willem Dafoe

“I am my paintings,” says Vincent van Gogh, played by Willem Dafoe in a career-best performance, in Julian Schnabel’s “At Eternity’s Gate,” which follows the artist through his last tumultuous and astonishingly prolific years in the late 1880s in the south of France. Watching this explosively lyrical film, you can believe it. I must admit that my first reaction to seeing yet another movie about Van Gogh was not welcoming, especially since several of these, including “Lust