What our Constitution indispensably protects is the freedom of each of us, be he Jew or Agnostic, Christian or Atheist, Buddhist or Freethinker, to believe or disbelieve, to worship or not worship, to pray or keep silent, according to his own conscience, uncoerced and unrestrained by government.
Abington v. Schempp 374 U.S. 203, no. 142, 1963.