"I have learned so much from all four of you and love each of you for exactly who you are." Related: Melinda French Gates, 60, Didn’t Expect to Be a Grandma So Soon but Calls It Unexpectedly ...

Melinda French Gates’ New Book Includes a Mysterious Shout-Out: 'You Know Who You Are' "You've helped me heal and find beauty again," writes the philanthropist, who recently told PEOPLE she is ...