[I]t is true that [the provisions of the Bill of Rights] were designed to meet ancient evils. But they are the same kind of human evils that have eme… - Hugo Black

To hold that a state cannot, consistently with the First and Fourteenth Amendments, utilize its public school system to aid any or all religious faiths or sects in the dissemination of their doctrines and ideals does not, as counsel urge, manifest a governmental hostility to religion or religious teachings. A manifestation of such hostility would be at war with our national tradition as embodied in the First Amendment's guaranty of the free exercise of religion. For the First Amendment rests upon the premise that both religion and government can best work to achieve their lofty aims if each is left free from the other within its respective sphere. Or, as we said in the Everson case, the First Amendment has erected a wall between Church and State which must be kept high and impregnable.

The First Amendment's language leaves no room for inference that abridgments of speech and press can be made just because they are slight. That Amendment provides, in simple words, that "Congress shall make no law . . . abridging the freedom of speech, or of the press." I read "no law . . . abridging" to mean no law abridging.

That Amendment requires the state to be a neutral in its relations with groups of religious believers and nonbelievers; it does not require the state to be their adversary. State power is no more to be used so as to handicap religions than it is to favor them.