This proposition consists of two parts. Part 1: The phenomenon of the backpart... Atik has no actual “back”. Part 2: Except that there is a face... Nevertheless, there is an aspect of “back”.
Part 1: The phenomenon of the backpart, where the lights are darkened... This too can be understood by considering the human form, which has a front – the “face” – facing and directed towards others, and a back, which is turned away and cannot be used to face anything. Similarly, the lights have an aspect through which they intentionally direct and set themselves on course in a particular direction, while other aspects are inferior to the “face” inasmuch as they lack this radiation and are subordinate to the main lights. Viewing the face, one finds a strong radiation powerfully directed towards the spectator, while looking at the backpart is like standing behind a person’s shoulders.