A biopic of Emily Dickinson sounds like a terrible idea, and it probably would be if it unfolded along conventional lines. But what if it were as unconventional as Dickinson’s poetry? I don’t mean a movie that is la-di-dah “poetic,” with out-of-focus shots of blossoms falling as classical music plays. What if the cinematic approach to the poet’s life could approximate her eccentric punctuation—full of dashes where commas usually roam—her abrupt shifts in focus, and her piercing gaze at eternity? If you could do that you’d have A Quiet Passion, an appropriately odd film from the British director Terence Davies.