 As a philosopher, Alexander presents in his writings an Aristotelian point of view that reflects in many ways the conditions of his own time, on questions that were not or not extensively discussed by Aristotle himself. His Problems and Solutions (Quaestiones), in three books, are collections of short essays, which were apparently grouped together in different books already in antiquity. As their Greek title (phusikai scholikai aporiai kai luseis. lit. ‘School-discussion of problems and solutions on nature’, cf. Sharples 1992, 3) indicates, these three books address problems in natural philosophy in the broadest sense. The fourth collection, Problems of Ethics (êthika problêmata) proceeds in a similar way. As the lists of the essays’ titles at the beginning of each book show, the collections contain a hodgepodge of topics, arranged in a quite loose order. The intellectual level of these discussions is uneven and the titles of the treatises are sometimes misleading. Some of essays do present problems and solutions, but others contain exegeses of problematic passages in Aristotle’s texts. There are also mere paraphrases or summaries of certain texts, collections of arguments for a certain position, and sketches of larger projects that were never worked out. It is unclear when and by whom these collections were put together. As mentioned above, some of the essays may be the work of Alexander’s associates, or lecture-notes taken by his students. Most interesting from our point of view are those questions that deal with metaphysical issues, like the relation of form and matter, and with the status of universals in general (see Tweedale 1984, Sharples 2005, and Sirkel 2011). Of particular interest are also those discussions in book II that are concerned with certain aspects of Aristotle’s psychology, because Alexander’s commentary on the De anima is lost; they supplement his treatise On the Soul. Of special interest here is his work that has been dubbed ‘De anima libri Mantissa’ (= ‘makeweight’ for his book On the Soul) by its first modern editor, I. Bruns. Of interest are also the essays on the notion of providence (an important topic at Alexander’s time, in part due to the influence of the Stoics’ focus on divine providence). These essays defend the view that while there is no special care for individuals, providence over the objects in the sublunary sphere is exercised by the movement of the heavenly bodies in the sense that they preserve the continuity of the species on earth.