Romeo first compares Juliet to the sun, so radiant is her beauty. He says that, like the sun, Juliet has the power to drive away the darkness. Then he goes on to compare her eyes to stars, which could bring light to the night, and says the "brightness of her cheek" could outshine the stars "as daylight does a lamp." Finally, he calls her a "bright angel." Clearly, at this point, Romeo is smitten with Juliet, and his repeated use of light imagery suggests the power of love to overcome the darkness of hate (he knows she is a Capulet). We are also meant to recognize that Juliet is a young lady of considerable beauty. At this point, Romeo's attraction to his future wife seems to transcend the physical, and his repeated emphasis on her luminescence emphasizes this.