Call you me "fair"? That "fair" again unsay.
Demetrius loves your fair: O happy fair!

– William Shakespeare

A Midsummer Night’s Dream, Act 1, Scene 1. Helena, who loves Demetrius but is rejected by him in favor of Hermia, struggles with self esteem issues. Constantly comparing herself to Hermia, she responds to her friend calling her beautiful ("fair"). Don’t call me beautiful, she says, it’s your beauty that Demetrius loves.