It's a play written by Arthur Miller.
I'm reading it in the original.
But I don't understand this sentence.
She more than loves him, she admires him, as though his mercurial nature, his temper, his massive dreams and little cruelties, served her only as sharp reminders of the turbulent longings within him, longings which she sheres but lacks the temperament to utter and follow to their end.
Can you explain it with easier sentences?