He seemed under a chronic irritation of the greatest intensity. His habit of talking to himself in a low voice grew steadily upon him, but though Mrs. Hall listened conscientiously she could make neither head nor tail of what she heard.
In "The Invisible Man" by H. G. Wells, the character displays a persistent sense of irritation that deeply affects his demeanor. This chronic annoyance suggests he is troubled by something significant, though the specifics remain unclear. His resulting behavior includes a tendency to engage in low-voiced conversations with himself, indicating a possible descent into isolation or madness.
Mrs. Hall, observing him closely, tries to understand his ramblings but finds herself perplexed...