Who said "The voice must be trained, but the soul cannot be taught."?

This quote is attributed to Maria Callas.

The voice must be trained, but the soul cannot be taught. - Maria Callas

"The voice must be trained, but the soul cannot be taught."

Maria Callas Wisdom

Opera Soprano Greek-American 1923–1977

"You have to fight to reach your dream. You have to sacrifice and work hard for it."

"If music is the food of love, play on."

"I am my own sanctuary and I can be reborn as many times as I choose throughout my life."

"The mission of an artist is to save the soul of mankind."

"I'm not angry, I'm just disappointed."

"The best things in life are free."

"You can't have everything in life, but you can have what matters most."

"A woman's intuition is rarely wrong."