Why Religious Tolerance?
"The Fathers of the Constitution were not unaware of the varied and extreme views of religious sects, of the violence of disagreement among them, and of the lack of any one religious creed on which all men would agree. They fashioned a charter of government which envisaged the widest possible toleration of conflicting views ... The religious views espoused by respondents might seem incredible, if not preposterous, to most people. But if those doctrines are subject to trial before a jury charged with finding their truth or falsity, then the same can be done with the religious beliefs of any sect. When the triers of fact undertake that task, they enter a forbidden domain." 1
"It is the government’s duty to "make room for as wide a variety of beliefs and creeds as the spiritual needs of man deem necessary." 2
References:
1 - U.S. v. Ballard, 322 U.S. 78 (1943)
2 - Zorach v. Clausen, 343 U.S. 306 (1952).