"No, no, no, my girlfriend goes to help those needy poor people, which of course includes black people, but not to become one of them," Tommy immediately retorted.
Ottelia can't afford to be too familiar with black people. Given her nature, if she truly got intimate with black people, those lazy and thick-skinned black paupers would surely take Ottelia's charity for granted, and Ottelia might even come to think of it as natural.
