"Rock stars always want to do two things. They want to have fun and change the world. If they can do both at the same time, you're okay," BBC quoted him, as saying.
While at the event Alicia Keys, the co-founder of the Keep A Child Alive charity told Associated Press that Bono is 'an amazing man'.
"He is an inspiration and single-handedly made it cool to have something to speak about," she said.
She also added that Bono "works tirelessly at really having a cause and fighting for it".