O’Keefe and Marianne Moore
My father used to say,
“Superior people never make long visits,
have to be shown Longfellow’s grave
or the glass flowers at Harvard.
Self-reliant like the cat—
that takes its prey to privacy,
the mouse’s limp tail hanging like a shoelace from its mouth—
they sometimes enjoy solitude,
and can be robbed of speech
by speech which has delighted them.
The deepest feeling always shows itself in silence;
not in silence, but restraint.”
Nor was he insincere in saying, “Make my house your inn.”
Inns are not residences.
What is our innocence,
what is our guilt? All are
naked, none is safe. And whence
is courage: the unanswered question,
the resolute doubt, –
(Read more here)
See Moore’s handwriting here.
Marianne Moore was a Modernist American poet and writer noted for her irony and wit.
Georgia 
O’Keefe
(photo by Don Worth)
Georgia O’Keefe and Marianne Moore were both born on Nov 15, 1887.
Georgia married and lived longer than Marianne.
Update: Georgia O’Keefe: More Real than Realism by John Haber (Whitney Show)
Her abstractions show how often she surprised even herself. Instead of sustaining an image, including her image, she pushed an image just to see what it could become. When it got predictable, she threw it away and started over. Is this really an artist known for her purity? O’Keeffe gets one thinking how pure her abstraction or realism ever were. As she said, “Nothing is less real than realism,” and it drew her close to abstraction all her life.