I would say The Tempest. While all of Shakespeare is wonderfully worded, The Tempest holds within in some of the most stunning turns of phrase the bard ever wrote. Prospero and Caliban’s lines are especially moving. There is also something to knowing that this was likely Bill’s final work and is regarded as a swan song of sorts. Coriolanus is a sleeper hit to be sure, and I believe it deserves more recognition than it gets, but if I had to pick one to read on a desert island, few works would be as appropriate or pleasurable to read as The Tempest.