http://libertytree.ca/quotes/William.Brennan.Quote.8F30
“The door of the Free Exercise Clause stands tightly closed against any government regulation of religious beliefs as such. Government may neither compel affirmation of a repugnant belief, nor penalize or discriminate against individuals or groups because they hold views abhorrent to the authorities.”
~ Justice William J. Brennan
(1906-1997) U. S. Supreme Court Justice
Sherbert v. Verner, 1963