The speaker expresses gratitude and relief, noting a significant positive change in Lord Westerville's demeanor. Previously consumed by a bleak outlook, he has now begun to appreciate a wider range of experiences and emotions.
This transformation is attributed to the influence of a lady, highlighting her role in encouraging Lord Westerville to move beyond his previous negativity. The mention of "Only Black" versus the broader "spectrum" symbolizes a shift from despair to hope and richness in life.