The press exulted in publicizing Callas's temperamental behavior, her supposed rivalry with Renata Tebaldi and her love affair with Greek shipping tycoon Aristotle Onassis. Although her dramatic life and personal tragedy have often overshadowed Callas the artist in the popular press, her artistic achievements were such that Leonard Bernstein called her "the Bible of opera" and her influence so enduring that, in 2006, "Opera News" wrote of her: "Nearly thirty years after her death, she's still the definition of the diva as artist—and still one of classical music's best-selling vocalists."