Book excerpt: The cryptic prompts—fragments, really—of Brian Eno’s and Peter Schmidt’s Oblique Strategies unveiled themselves to Leslie Ullman as rough translations from an obscure language. As an experiment, Ullman used each one as a poem title, and in doing so she accessed a thrill of freedom, uncertainty, and propulsion beyond her own familiar patterns and landscapes. In the process, she found herself exploring the literary, visual, and musical arts from angles that had never occurred to her before. Unruly Tree showcases the most successful of Ullman’s play, and the result is a marvelous work by a poet at the height of her craft. At its heart this book is about process itself—even when it applies to experiences outside the arts—and about reclaiming an inner freedom many of us lose in our lives as adults in these noisy, rancorous times.