Maria Callas Was Opera’s Defining Diva. She Still Is. Callas would have turned 100 on Dec. 2. She and her flash of a career remain beacons of artistic integrity and profundity. Author: ZACHARY WOOLFE Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)MoreClick to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Tumblr (Opens in new window)