Brown told the crowd at the San Francisco Christian Center on Saturday about his parents' protests when he decided to become a priest as a young man. He also spoke about his experience working with the poor alongside Mother Teresa in Calcutta.
At one point, Brown told the crowd of about 200 people that representatives of his opponent, Meg Whitman, were in the room transcribing his remarks and sending them to the Whitman campaign.
Getting a smattering of laughter, Brown told the crowd, "We're all in here together."
The event was sponsored by The California Foundation. Organizers said Whitman was invited but declined to attend.