"Science fiction is and has been ripe to discuss other possibilities for sex and relationships: multiple marriages, communal structures, different genders. Writers like Theodore Sturgeon, Samuel R. Delany, Octavia Butler, Elizabeth Lynn, Nicola Griffith, Elisabeth Vonarburg, Candas Jane Dorsey, Eleanor Arnason, Storm Constantine have been my touchstones."
January 1, 1970
https://en.wikiquote.org/wiki/Nalo_Hopkinson