1. “My poor sight gives me an advantage. I can’t see the people in the audience who are scratching their heads while I am lost in my role and giving everything I have to the drama.” ~Maria Callas
2. Callas also had very poor eyesight which required her to wear very thick spectacles in order to see at all, a thing she refused to do onstage with the result that she was virtually blind during performances. In fact, during a performance of Tosca at Covent Garden she leaned too far over a candle and her hair caught fire. Improvising magnificently, Tito Gobbi, as the loathsome Scarpia, extinguished the fire by throwing water at her before the audience had noticed. Although they weren’t much use for seeing with, her eyes were a great asset for her acting, in turns flashing like a demon then shining like an angel.
(no. 2 here)