  For the purposes of this article, Byzantine philosophy is the study and teaching of traditional subjects of philosophy in the Greek language between c. 730 and 1453. The second half of this delineation construes the attribute “Byzantine” rather narrowly, in that it excludes the whole period between c. 330 and c. 730, which is commonly referred to by historians as “Early Byzantine” (and also leaves out of account philosophical activity in the minority languages of the Byzantine Empire). The main reason for focusing on the philosophical works after c. 730 is that Early Byzantine philosophy is usually covered in accounts of late Ancient Philosophy, of which it is a seamless continuation. The first half of the delineation should not be taken to imply any particular view regarding the “true face of Byzantine philosophy”, although we do think that it is by being related in certain ways to the philosophical tradition that a written work is eligible to be classed as philosophical. This tradition was formed in antiquity. Hence, the works discussed here will typically be concerned with questions inherited from ancient philosophy.