 The Dominican Aquinas wrote his case on the "state of perfection" in "De Perfectione Vitae Spiritualis contra Doctrinam Retrahentium a Religione" (1270).On trinitarian theology, however, Gerard was much closer to the emerging Franciscan view.With Aquinas, he was one of the developers of the "quodlibet" genre of open philosophical discussion, flourishing for about a century from his time.