free-think-ern. A person who forms opinions about religion on the basis of reason, independently of tradition, authority, or established belief. Freethinkers include atheists, agnostics and rationalists.
No one can be a freethinker who demands conformity to a bible, creed, or messiah. To the freethinker, revelation and faith are invalid, and orthodoxy is no guarantee of truth.
"Don't believe anything. Regard things on a scale of probabilities. The things that seem most absurd, put under 'Low Probability', and the things that seem most plausible, you put under 'High Probability'. Never believe anything. Once you believe anything, you stop thinking about it." --Robert A. Wilson