"When my enemies stop hissing, I shall know I'm slipping."

"There must be a law against forcing children to perform at an early age. Children should have a wonderful childhood. They should not be given too much responsibility."

"It's a terrible thing to go through life thinking that you have a rock on your side when you haven't."

"I cannot switch my voice. My voice is not like an elevator going up and down."

"I don't need the money, dear. I work for art."

"I would not kill my enemies, but I will make them get down on their knees. I will, I can, I must."

"Love is so much better when you're not married."

"That is the difference between good teachers and great teachers: good teachers make the best of a pupil's means; great teachers foresee a pupil's ends."

"Women are not pals enough with men, so we must make ourselves indispensable. After all, we have the greatest weapon in our hands by just being women."

"I was always too mature for my age - and not very happy. I had no young friends. I wish I could go back to those days. If I could only live it all again, how I would play and enjoy other girls. What a fool I was."

"An opera begins long before the curtain goes up and ends long after it has come down. It starts in my imagination, it becomes my life, and it stays part of my life long after I've left the opera house."

"If I have stepped on some people at times because I am at the top, it couldn't be helped. What should I do if someone gets hurt... retire?"

"I would like to be Maria, but there is La Callas who demands that I carry myself with her dignity."

"When music fails to agree to the ear, to soothe the ear and the heart and the senses, then it has missed the point."

"You are born an artist or you are not. And you stay an artist, dear, even if your voice is less of a fireworks. The artist is always there."

"First I lost my voice, then I lost my figure and then I lost Onassis."

"Don't talk to me about rules, dear. Wherever I stay I make the goddam rules."

"I am not an angel and do not pretend to be. That is not one of my roles. But I am not the devil either. I am a woman and a serious artist, and I would like so to be judged."

"I prepare myself for rehearsals like I would for marriage."

"Good teachers make the best of a pupil's means; great teachers foresee a pupil's ends."