"The days of anything static-form, content, state-are over," declares poet and translator Pierre Joris in A Nomad Poetics, his first collection of critical essays. Joris maps the success and limitations of contemporary avant-garde poetics, from Tristan Tzara to the most contemporary American experimental poetry, an investigation that leads him to envision a "nomadic poetics" as a strategy for new poetic work, for translation and, fundamentally, for...