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O'BRIEN: You are a slow learner, Winston, said OBrien gently.
WINSTON: How can I help it? he blubbered. How can I help seeing what is in front of my eyes? A person with white skin is white.
O'BRIEN: Sometimes, Winston. Sometimes they are white. Sometimes they are black. Sometimes they are all of them at once. You must try harder. It is not easy to become sane.