Back at his office, Hytner reflected on the highlights of his career. Of all his moments in the theatre, the one that still speaks most powerfully to him is the finale of his 2007 staging of “Much Ado About Nothing,” which starred Simon Russell Beale and Zoe Wanamaker as the quarrelling Benedick and Beatrice. “They dance, as required,” Hytner said. “I pulled Beatrice and Benedick out of the dance. As the show is ending, everybody else is partying, and they’ve found a quiet corner. Once they find each other, they’ve got so much to talk about. That’s all they’re going to do for the rest of their lives: talk to each other, not at each other. The world is there for them. They can leave and join at will. Contentment is in being in quiet retreat.” Hytner paused, and gazed across the river toward the clock on the Savoy Hotel. “It’s what I want,” he said.