Categories Martin Luther King Jr. Nothing in the world is more dangerous than sincere ignorance and conscientious stupidity. Post author By quotegeek Post date May 16, 2012 No Comments on Nothing in the world is more dangerous than sincere ignorance and conscientious stupidity. Nothing in the world is more dangerous than sincere ignorance and conscientious stupidity. → I’m a Sagittarius, which probably tells you way more than you need to know. Leave a Reply Cancel replyYou must be logged in to post a comment.