she went and got her doctorate in hematology, and medical degree in later years. wanted her to come back to the united states, because he missed her. when he was on his death bed, he asked for a photograph of her. they loved each other. and she was a professional protester, but she was a left professional protester. but sort of as i say, the pawn doesn't stray too far from the queen. he became a protester, but sort of on the other side, anti-americanism and so on and so on. so she had a great influence on him. and she was both mother and father to him, because she was a single mother. okay. couple more questions. couple more. we have time, sir? two more questions. >> it must have been a really unique experience for you as a biographer to revisit a subject that you had written about so many years earlier. i can't imagine when you are "profiles of a prodigy" you must have developed a bond with bobby. i'm wondering how that's affected you over the years. you touched upon it to a certain degree how it's affected you as you saw him change and degenerate over the years.