The first Pseudo-Aristotelian works were produced by the members of the Peripatetic school which was founded by Aristotle. However, many more works were written much later, during the Middle Ages. Because Aristotle had produced so many works on such a variety of subjects it was possible for writers in many different contexts—notably medieval Europeans, North Africans and Arabs—to write a work and ascribe it to Aristotle. Attaching his name to such a work guaranteed it a certain amount of respect and acceptance, since Aristotle was regarded as one of most authoritative ancient writers for the learned men of both Christian Europe and the Muslim Arab lands. It is generally not clear whether the attribution to Aristotle of a later work was done by its own author or by others who sought to popularize such works by using his name.