Al Pacino has opened up about his reasons for writing his memoir – one of which is for his 16-month-old son to know who he is. The Godfather star, 84, recently published his memoir, Sonny Boy, and talked about how becoming a father for the fourth time last year motivated him to revisit his life.

The legendary "Godfather" trilogy star, 84, reveals in his new book, "Sonny Boy: A Memoir," out now, that his 16-month-old son, Roman, has inspired him to reflect on the nature of life. "I look at this little baby,