No child is prevented from praying at any time. They just cannot force any other child to pray also.
It's well known that most of the founding fathers were deists, not Christians. Some of the early Presidents had contrary views of Christianity, that are not well known to many:
"The day will come when the mystical generation of Jesus, by the Supreme Being hat have been the fras his father, in the womb of a virgin, will be classed with the fable of the generation of Minerva in the brain of Jupiter."
- President George Washington
“Christianity is the most perverted system that ever shone on man”
“Religions are all alike -- founded upon fables and mythologies”
- Thomas Jefferson
"Paul was the first corrupter of the doctrines of Jesus"
-- Thomas Jefferson
"Difference of opinion is advantageous in religion. The several sects perform the office of a common censor over each other. Is uniformity attainable? Millions of innocent men, women and children, since the introduction of Christianity, have been burnt, tortured, fined, imprisoned; yet we have not advanced an inch towards uniformity. What has been the effect of coercion? To make one half the world fools, and the other half hypocrites. To support roguery and error all over the earth." - Thomas Jefferson
"My earlier views of the unsoundness of the Christian scheme of salvation and the human origin of the scriptures have become clearer and stronger with advancing age and I see no reason for thinking I shall ever change them."
- President Abraham Lincoln
"The purpose of separation of church and state is to keep forever from these shores the ceaseless strife that has soaked the soil of Europe with blood for centuries." - James Madison
"The way to see by faith is to shut the eye of reason." — Ben Franklin, Poor Richard's Almanack, 1758.
"The Bible is not my Book and Christianity is not my religion. I could never give assent to the long complicated statements of Christian dogma." — Abraham Lincoln.
"What are the fruits of Christianity ? Superstition, bigotry and persecution." — James Madison, 4th president of the U.S.
"This would be the best of all possible worlds if there were no religion in it." — John Adams, 2nd president of the U.S.
Question with boldness even the existence of God; because, if there be one, he must more approve of the homage of reason than that of blindfolded fear." - Thomas Jefferson
"Religions are all alike - founded upon fables and mythologies." - Thomas Jefferson
"History, I believe, furnishes no example of a priest-ridden people maintaining a free civil government." - Thomas Jefferson
"In no instance have . . . the churches been guardians of the liberties of the people." - James Madison
" The divinity of Jesus is made a convenient cover for absurdity." - John Adams
"Lighthouses are more helpful than churches." - Benjamin Franklin
"The Bible is not my book nor Christianity my profession. I could never give assent to the long, complicated statements of Christian dogma."
-- Abraham Lincoln
"The divinity of Jesus is made a convenient cover for absurdity."
-- John Adams
"Christianity is the most perverted system that ever shone on man."
-- Thomas Jefferson
"The civil rights of none shall be abridged on account of religious belief or worship, nor shall any national religion be established, nor shall the full and equal rights of conscience be in any manner, or on any pretence, infringed.'' - James Madison (Original wording of the First Amendment; Annals of Congress 434 (June 8, 1789).)
"It has been fifty and sixty years since I read the Apocalypse, and then I considered it merely the ravings of a maniac." - Thomas Jefferson
"We discover in the gospels a groundwork of vulgar ignorance, of things impossible, of superstition, fanaticism and fabrication ." - Thomas Jefferson
"Take away from Genesis the belief that Moses was the author, on which only the strange belief that it is the word of God has stood, and there remains nothing of Genesis but an anonymous book of stories, fables, and traditionary or invented absurdities, or of downright lies."
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http://freethought.mbdojo.com/foundingfathers.html .