The narrator reflects on a character who feels inexplicably irritated by trivial matters, many of which they had a hand in creating themselves. One specific source of this irritation is Mrs. Casaubon, yet the character is aware that they are overreacting. This inner turmoil suggests a deeper conflict stemming from their perceptions and expectations.

This dynamic demonstrates how individuals can fabricate tensions and disturbances in their lives, often leading to an emotional response towards others who are unaware of the internal drama unfolding. The character's experiences highlight how personal susceptibilities can produce unnecessary friction with the outside world, creating interactions that feel charged even when the other party is indifferent.