talk to me , mother , and oncle julien brought you here to sleep with my father , but he did n't know what would happen , but you understand , mother , you said you understood , that the giant helix was in this case not allied to any ancient evil , but was purely an expression of a genetic potential in you and in father that had always been there ... . mona tried to answer , but it was n't necessary , the voice went on and on , singsong and soft and very rapid .