— Hugo Black U.S. Supreme Court justice 1886 - 1971
Context: Our Founders were no more willing to let the content of their prayers and their privilege of praying whenever they pleased be influenced by the ballot box than they were to let these vital matters of personal conscience depend upon the succession of monarchs. The First Amendment was added to the Constitution to stand as a guarantee that neither the power nor the prestige of the Federal Government would be used to control, support or influence the kinds of prayer the American people can say -- that the people's religions must not be subjected to the pressures of government for change each time a new political administration is elected to office. Under that Amendment's prohibition against governmental establishment of religion, as reinforced by the provisions of the Fourteenth Amendment, government in this country, be it state or federal, is without power to prescribe by law any particular form of prayer which is to be used as an official prayer in carrying on any program of governmentally sponsored religious activity.
Writing for the court, Engel v. Vitale, 370 U.S. 421 (1962).