Certainly the affirmative pursuit of one's convictions about the ultimate mystery of the universe and man's relation to it is placed beyond the reach of law. Government may not interfere with organized or individual expressions of belief or disbelief. Propagation of belief - or even of disbelief - in the supernatural is protected, whether in church or chapel, mosque or synagogue, tabernacle or meeting-house.
Felix FrankfurterFreedom of expression is the well-spring of our civilization... The history of civilization is in considerable measure the displacement of error which once held sway as official truth by beliefs which in turn have yielded to other truths. Therefore the liberty of man to search for truth ought not to be fettered, no matter what orthodoxies he may challenge.
Felix Frankfurter