What is a poem? The actor Matthew McConaughey, who’s written what’s likely to be the best-selling book of poetry published this year, has some thoughts on the matter. Poems are serious: “They illuminate belief,” he writes early in his new book, “Poems & Prayers.” But they’re also not serious: “Poems are a Saturday in the middle of the week.” That’s McConaughey-brand thinking in a nutshell, fitting for a man who worked hard to get an Oscar but who cruised to success on an earthy, easygoing persona. For him, poems involve some hard thinkin’, but they’re a low-stress way to deal with this business of livin’. Read More