The prayer of each man from his soul must be his and his alone. This is the genius of the First Amendment. If there is anything clear in the First Amendment, it is that the right of the people to pray in their own way is not be controlled by the election return.
Hugo Black (1886-1971) American politician and jurist, US Supreme Court Justice (1937-71)
Engel v. Vitale, 370 U.S. 421, 425 (1962) [extemporaneous remarks]
(Source)
Added by Black during his reading of the majority opinion, and not part of the written ruling. The passage follows, "It is no part of the business of government to compose official prayers for any group of the American people to recite as a part of a religious program carried on by government."