How does Georges Bernanos use imagery in The Diary of a Country Priest?

Imagery:

"He is a good priest, deeply kind and human, who at diocesan headquarters is even considered a bit of a freethinker, on the dangerous side. His outbursts fill his colleagues with glee, and he stresses them with a look meant to be fiery, but which gives me such a deep sensation of stale discouragement that it almost brings tears into my eyes." Chapter 1, pg. 1.

"The mistake she made wasn't to fight dirt, sure enough, but to try to and do away with it altogether. As if that were possible! A parish is bound to be dirty. A whole Christian society's a lot dirtier. You wait for the Judgment Day and see what the angels'll be sweeping out of even the most saintly monasteries. Some filth!" Chapter 1, pg. 11.