Freedom 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 FrankfurterThe ultimate touchstone of constitutionality is the Constitution itself, and not what we have said about it.
Felix FrankfurterThe State insists that, by thus quarantining the general reading public against books not too rugged for grown men and women in order to shield juvenile innocence, it is exercising its power to promote the general welfare. Surely this is to burn the house to roast the pig...The incidence of this enactment is to reduce the adult population of Michigan to reading only what is fit for children.
Felix FrankfurterWhile it is not always profitable to analogize "fact" to "fiction," La Fontaine's fable of the crow, the cheese, and the fox demonstrates that there is a substantial difference between holding a piece of cheese in the beak and putting it in the stomach.
Felix Frankfurter