with the update of practical knowledge such as pharmacology by adding information taken from books composed by authors contemporary with him including ibn Wafid (see Bos’ introduction, pp. xvii–xxii). This short analysis illustrates the importance of publishing the Arabic texts of Maimonides’ medical works, when we explore the history of medicine. Bos has made a great contribution to the schola...

Aristotle in his Categories 10, 13a37ff, De Interpretatione 4f, 17a8–37; 10, 19b5– 20b12 and Prior Analytics i.2, 25a1–13; i.46, 51b5–52b35 introduced a distinction between affirmative and negative (kataphátikos and apophátikos, or in noun form katáphasis and apóphasis). Aristotle’s views are not my concern here. But already Aristotle’s treatment of the notions raises some fundamental questions: