as a single parent, he decided to be there, to put us to ged bed, to be there when we woke up from aream. >> one day you'll be on top of the world. >> i'm beau biden, and joe biden is my dad. >> only to be brought down in a flash with a profound loss and a grief that leaves a black hole in your heart, questions of faith in your soul, and anger, anger beyond rage. >> beau biden passed away from brain cancer. his illness had not been widely pub lisized. >> parents never expect to have a child predecease them. never. that's when you'll have to dig deep and live what mom taught you, that out of everything terrible that happens, something good will come if you look hard enough. you'll hold on with faith and pure grit. you'll be blessed with a love that will anchor you as deeply as your faith. i love you. you're the love of my life and the life of my love. ( applause ) your bond with your children and your grandchildren will be your redemption. because of a family grounded in unconditional love and loyalty and the compassion of friends and strangers, you'll get up. you'll keep going. and y