This a critical editio princeps of a Byzantine ascetic work composed of twenty-four short Christian moral teachings in prose, each beginning with a letter of the Greek alphabet. The four known manuscript witnesses for the Alphabetic Chapters have been processed philologically to yield a stemma codicum and a significant number of variant readings. The complex question of authorship is discussed briefly. This article adds to the edited specimina of a minor, yet popular, genre of Byzantine theological literature – the monastic chapters.