Nothing is more important than Cosima. I must be her doctor and that means I cannot be her lover. I must remain detached, for if I am not, I will live and die with every cough, every seizure, every test, every treatment. It will eat away at my heart and soul and I will be unable to care for her. In addition, I made a promise to Cosima that wonderful, amazing night when we declared our love for each other: If I love her, I must love all her sisters. And so I must love them all the more by not loving her. It is the only way either one of us will survive.
— Dr. Delphine Cormier - Classified Clone Reports.