Ellen Key's 1903 work 'Love and Marriage' advocated for sexual freedom, the choice of motherhood, and the reform of marriage laws, challenging traditional societal norms. Key's ideas resonated with the early feminist movement, promoting individual rights and personal autonomy in relationships. Her writings contributed to ongoing discussions about gender roles and family structures, influencing social reform in the early 20th century.

Ellen Key's 'Love and Marriage' published in 1903 significantly influenced literary discussions around modern love and relationships, inspiring poets like Rainer Maria Rilke to explore themes of intimacy and emotional connection. This work helped shape the discourse on romantic ideals in both Scandinavian and international literature.