James Tiptree, Jr., pseudonym of Alice B. Sheldon (post 2): She evaluated her multiple personalities to see who would write fiction and be companionable 

1950

She says: “Somewhere in the back of my mind there is a female wolf who howls, and a gross-bodied workman who moves things and sweats, and a thin rat-jawed person who is afraid and snaps, and a practical woman, and one of those monkeys with big haunted eyes gazing at an equation with love, and Miss Fix-It, and an Anglo-Saxon lady…and—my own favorite—a disastrous comedian who every so often comes roaring out of the wings and collapses the show. Now it seems clear that while one might get one or two of these characters to write for a living, most of them won’t go along…” (1, p. 160).

1955

"For a long time Alli [Alice B. Sheldon] wanted a divorce…Alli insisted she couldn’t live with anyone. 'I’ve learned my lesson, it’s not for me, and there are plenty of women who live alone and I’m one,' she wrote their marriage counselor…'I figure that I have enough sub-personalities so I can build one up to where it is quite companionable, and displays divergent views, the ability to question, argue and hold opinions' ” (1, p. 174).

1. Julie Phillips. James Tiptree, Jr.: The Double Life of Alice B. Sheldon. New York, St. Martin’s Press, 2006.