This precious book of love, this unbound lover,
To beautify him, only lacks a cover.

– William Shakespeare

Romeo and Juliet, Act 1, Scene 3. Lady Capulet uses a vivid metaphor to compare Paris to a "precious book of love" that needs only a cover – Juliet – to complete him and make him more beautiful. She is trying to persuade her daughter Juliet to marry Paris. The lines that precede this with an extended book metaphor are: "Read o’er the volume of young Paris’ face, And find delight writ there with beauty’s pen; Examine every married lineament, And see how one another lends content And what obscured in this fair volume lies Find written in the margent of his eyes."