I agree with Greta Garbo. She was intensely private, and even had the head of the studio removed from the set when she was ready to act. Although she was gorgeous, she never married. Whenever the studio refused to pay her what she wanted, she wouldn't argue, she'd simply comment that she was going to go back to Sweden. In her later years she lived as a recluse in New York City.
I think Chaplin was quite NT.
Keaton could be AS.
W.C. Fields, who started out in silent movies, was terribly difficult to get along with, and incredibly creative.
Jack Pierce, the make-up man who created the Frankenstein monster, could have been AS.
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I wake to sleep, and take my waking slow. I feel my fate in what I cannot fear. I learn by going where I have to go. ~Theodore Roethke