That's tautological. You write a manifesto if you think you have something worthwhile to share with the world. Same with writing books, asking people to subscr

That's tautological. You write a manifesto if you think you have something worthwhile to share with the world. Same with writing books, asking people to subscribe to your blog newsletter, shouting on a street corner or asking people to vote for you. That said, who says having some self-importance is inherently bad? Trying to be humble is a cultural and religious virtue, not an absolute truth.