In Georgette Heyer's "Bath Tangle," the protagonist perceives Serena as a beacon of brightness, illuminating his life in a way that feels transformative. The imagery of a sunless room suggests that before Serena's presence, he experienced darkness or emptiness. Her impact is so profound that he cannot fathom anyone else viewing her light as overwhelming or excessive.

This quote encapsulates the idea that love and admiration can alter one's perspective entirely. Serena's charm and energy bring clarity to the protagonist's world, emphasizing the theme of how a single person can bring hope and joy to those around them, reshaping their realities and feelings for the better.