The speaker of W.B. Yeats's poem, "For Anne Gregory" tells Anne that she is doomed to be loved, not for herself alone, but for her yellow hair. Anne finds this prospect so unappealing that she threatens to dye her hair. Why should Anne be dismayed, and what is it to love someone for herself "alone"? These questions take us to the heart of some crucial philosophical problems of romantic love. Rationality has a place here, but not the place it is usually given. We need to assess the rationality of the beloved, as well as of the lover.