This is Dr. Christian Barnard. He performed the world's first human heart transplant operation on 3 December 1967 in S. Africa. The patient was a 54-year-old man suffering from incurable heart disease. Barnard later wrote, "If a lion chases you to the bank of a river filled with crocodiles, you will leap in, convinced you can swim to the other side." The donor heart came from a woman who had been brain damaged in an accident. The doctor marveled, 'It works.' The patient lived for 18 days.