1. Introductory concepts -- 2. Psychobiological considerations -- 3. Gender identity and male homosexuality -- 4. Freud's Three essays revisited -- 5. The role of the family in the etiology of homosexuality -- 6. Character pathology and sexual orientation: introductory concepts -- 7. Homosexuality-heterosexuality and obsessional character disorders: character neuroses -- 8. Homosexuality-heterosexuality and obsessional disorders: borderline syndromes -- 9. Bisexuality, obsessional character neurosis, and borderline syndromes -- 10. Masochism and sexual orientation -- 11. Homosexuality and paranoid psychopathology -- 12. Psychopathology and sexual orientation: further reflections -- 13. Childhood -- 14. Adolescence -- 15. Gender identify and the sense of masculinity -- 16. Male sexual fantasy differentiation -- 17. Sexual fantasy, ego, and self -- 18. Hierarchy and sexual orientation -- 19. Conclusion: psychoanalysis, science, and homosexuality
