Shakespeare`s sonnet N46 is wonderful, very beautiful words about love: Mine eye and heart are at a mortal war How to divide the conquest of thy sight; Mine eye my heart thy picture's sight would bar, My heart mine eye the freedom of that right. My heart doth plead that thou in him dost lie - A closet never pierced with crystal eyes - But the defendant doth that plea deny And says in him thy fair appearance lies. To 'cide this title is impanneled A quest of thoughts, all tenants to the heart, And by their verdict is determined The clear eye's moiety and the dear heart's part: As thus; mine eye's due is thy outward part, And my heart's right thy inward love of heart.

Shakespeare wrote many beautiful poems. One comes to my mind quickly: It is sonnet 116 that starts like this Let me not to the marriage of true minds admit impediments. Love is not love which alters when it alteration finds.