He told the audience:
"Oprah was a big reason I wrote this book," he said. "We had conversations about language and the N word, and while we didn't agree, we left that conversation with a better understanding."
And now he wants fans to have a better understanding of his work.
"I want to encourage young artists to not be afraid to use their voices. I'm trying to expand the genre of hip hop and keep it truthful. You have to question everything about life. I believe in God and for me different religions are all praying to the same God."