“The separation of church and state is necessary partly because if religion is good then the state shouldn't interfere with the religious vision or with the religious prophet.”
The Mike Wallace Interview (1958)
Context: The separation of church and state is necessary partly because if religion is good then the state shouldn't interfere with the religious vision or with the religious prophet. There must be a realm of truth beyond political competence, that's why there must be a separation of churches, but if religion is bad and a bad religion is one that gives an ultimate sanctity to some particular cause. Then religion mustn't interfere with the state — so one of the basic Democratic principles as we know it in America is the separation of church and state. … A church has the right to set its own standards within its community. I don't think it has a right to prohibit birth control or to enforce upon a secular society its conception of divorce and the indissolubility of the marriage tie.
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Reinhold Niebuhr 65
American protestant theologian 1892–1971Related quotes

“I believe in the separation of church and state… We all have our own religious beliefs.”
Explaining his refusal to sign a "National Day of Prayer" proclamation (6 May 1999)
Context: I believe in the separation of church and state... We all have our own religious beliefs. There are people out there who are atheists, who don't believe at all... They are all citizens of Minnesota and I have to respect that.

Speech, Marion, Ohio (31 July 1875)

Writing for the court, Everson v. Board of Education, 330 U.S. 1 (1947).

Frankfurt Book Fair speech (2003)

The War on Religion
LewRockwell.com
2003-12-30
http://www.lewrockwell.com/paul/paul148.html
2000s, 2001-2005
2010s, American Contempt for Liberty (2015)
Context: What our nation needs is a separation of “business and state” as it has a separation of “church and state.” That would mean crony capitalism and crony socialism could not survive.

Orgini e dottrina del fascismo, Rome: Libreria del Littorio, (1929). Origins and Doctrine of Fascism, A. James Gregor, translator and editor, Transaction Publishers (2003) p. 31