Perpetual Andrew Motion: Tori Marchiony profiles former U.K. Poet Laureate Sir Andrew Motion. He’s five decades in and still finding room to grow; Vijay Iyer-Key Changes: Among the most highly regarded jazz pianists of his time, Vijay Iyer has made his instrument of choice an instrument of discovery; Susan Choi-Interrogator of Truth: Susan Choi’s books reflect her skepticism of authority.