You're not there to spread any particular- if you're Bob Marley you're there to spread a message, but very few people can do that effectively without shoving opinions down someone's throat.
“Most of the people who are in elective office in Washington, D.C., they have held public office before. How's that workin' for you?”
“We don't really understand most of what's happening in the cosmos. Is there any afterlife? Who knows.”