A beautiful woman is the subject of Lord Byron's attention in She Walks in Beauty. The speaker gazes at this woman as she walks and marvels at her natural beauty—he likens her stunning visage to a perfectly lit night sky that is free of clouds and full of stars. Her appearance is a perfect harmony of dusky depths and pulsating light, particularly her eyes. This spectacular study of contrasts and the delicate brilliance on her face is so pristine that heaven itself would not let this kind of radiant beauty see the light of day because it cannot compete with her.
The woman's beauty is so fine-tuned and flawless that even a fraction of extra shadow or sunlight would have sullied her perfect appearance. This statement is further emphasized by her dark, wavy hair that softly falls over her face like delicate ripples. Her sweet expression also proves that she is just as pure and flawless on the inside as she is in her external appearance. The speaker is enamored by her soft, graceful features like her cheeks and eyebrows—her smile speaks volumes of her inner virtue and peace. The speaker concludes that someone who is this beguiling and lovely must also possess a heart and a nature that is gentle and innocent.