  For most of the period from 1257 through 1266 Bonaventure trekked through France and Italy by foot, as did all friars when they traveled.  In 1266 he returned to Paris, where his friars were under attack both from conservatives in the Theology faculty and from radicals in Arts.  Bonaventure began a series of writings devoted primarily to moral matters: Collations on the Ten Commandments (Collationes de decem praeceptis), Lent of 1267; Collations on the Seven Gifts of the Holy Spirit (Collationes de septem donis Spiritus sancti), Lent of 1268; a defense of the friars bearing the Socratic title Apologia pauperum (Defense of the Mendicants), 1269. On 10 December 1270, Etienne Tempier, bishop of Paris, condemned certain erroneous Aristotelian propositions. During Easter-tide of 1273 Bonaventure delivered his magisterial Collations on the Hexameron (Collationes in Hexaemeron).