Yacin

“A friend. What is a friend, in a world where any friend may be a lover at a new phase of the moon? Not I, locked in my virility: no friend to Therem Harth, or any other of his race. Neither man nor woman, neither and both, cyclic, lunar, metamorphosing under the hand's touch, changelings in the human cradle, they were no flesh of mine, no friends; no love between us.”
― Ursula K. Le Guin, The Left Hand of Darkness