Note 067
The private life of Julian in Gaul, and the severe discipline which he embraced, are displayed by Ammianus (xvi. 5), who professes to praise, and by Julian himself, who affects to ridicule (Misopogon, p. 340) a conduct which, in a prince of the house of Constantine, might justly excite the surprise of mankind.
Note to Chapter 19 of DECLINE & FALL by Gibbon