The Evolution of Love is both a historical and psychological consideration of "metaphysical eroticism." Contents: "FIRST STAGE: THE SEXUAL INSTINCT, THE SECOND STAGE: LOVE, CHAPTER I. The Birth of Europe, CHAPTER II. The Deification of Woman (First Form of Metaphysical Eroticism):â(a) The Love of the Troubadours; (b) The Queen of Heaven; (c) Dante and Goethe; (d) Michel Angelo CHAPTER III. Perversions of Metaphysical Eroticism:â(a) The Brides of Christ; (b) Sexual Mystics THE THIRD STAGE: THE BLENDING OF SEXUALITY AND LOVEâŚ"