"Generally the theories we believe we call facts, and the facts we disbelieve we call theories."
-- Felix Cohen
Very true. It's a matter of perception. Just because we don't believe it doesn't make it untrue or wrong. Some people's beliefs change over time and what they believed when they were young they no longer believe. So I suggest you keep open minded, challenge your self to read and listen to views that are different than yours. Be humble to recognize your beliefs may just be that your beliefs. Always seek to learn more, explore new ideas, don't be complacent. respect others with opposing points of view. Don't be afraid to engage in dialogue and discussion with others who disagree with you. Recognize that you are not infallible.
Recognize that much of what we believed years ago has changed. Stay open....