First, a few quotes from America's founding Fathers
"The United States is in no sense founded upon Christian docrtrine" G. Washington
"I do not find in orthodox Christianity one redeeming feature" . Thomas Jefferson
"It does me not injury for my neighbor to say there are twenty gods or not god. Neither picks my pocket nor breaks my leg." Thomas Jefferson
"The bible is not my book, and Christianity is not my religion" A. Lincoln
"I do not believe in the creed professed by the Jewish church, by the Roman church, by the Greek church, by the Turkish church, by the Protestant church, nor by any other church that I know of. My own mind is my own church." Thomas Paine
Quotes as listed in Salvation for Sale, by Gerard Thomas
Second, a few about religion and the US government.
"The principal framers of the American political system wanted no religious parties in national politics. They crafted a constitutional order that intended to make a person's religious convictions, or his lack of religious convictions, irrelevant in judging the value of his political opinion or in assessing his qualifications to hold politicaloffice." Isaac Kramnick and R. Laurence Moore, The Godless Constitution: The Case Against Religious Correctness (New York: W.W. Norton, 1996), p. 23.
"So succesful were the drafters of the Constitution in defining government in secular terms that one of the most powerful criticisms of the Constitution when ratified and for succeeding decades was that it was indifferent to Christianity and God. It was denounced by many as a godless document, which is precisely what it is." Isaac Kramnick and R. Laurence Moore, The Godless Constitution: The Case Against Religious Correctness (New York: W.W. Norton, 1996), p. 23.
"The next time believers tell you that 'separation of church and state' does not appear in our founding document, tell them to stop using the word 'trinity.' The word 'trinity' appears nowhere in the bible. Neither does Rapture, or Second Coming, or Original Sin. If they are still unfazed (or unphrased), by this, then add Omniscience, Omnipresence, Supernatural, Transcendence, Afterlife, Deity, Divinity, Theology, Monotheism, Missionary, Immaculate Conception, Christmas, Christianity, Evangelical, Fundamentalist, Methodist, Catholic, Pope, Cardinal, Catechism, Purgatory, Penance, Transubstantiation, Excommunication, Dogma, Chastity, Unpardonable Sin, Infallibility, Inerrancy, Incarnation, Epiphany, Sermon, Eucharist, the Lord's Prayer, Good Friday, Doubting Thomas, Advent, Sunday School, Dead Sea, Golden Rule, Moral, Morality, Ethics, Patriotism, Education, Atheism, Apostasy, Conservative (Liberal is in), Capital Punishment, Monogamy, Abortion, Pornography, Homosexual, Lesbian, Fairness, Logic, Republic, Democracy, Capitalism, Funeral, Decalogue, or Bible." Dan Barker, Losing Faith in Faith: From Preacher to Atheist
And finally a few on atheism and faith
"Now, if anything at all can be known to be wrong, it seems to me to be unshakably certain that it would be wrong to make any sentient being suffer eternally for any offence whatever."Antony Flew,"The Presumption of Atheism" God, Freedom, and Immortality
"I do not pretend to be able to prove that there is no God. I equally cannot prove that Satan is a fiction. The Christian God may exist; so may the gods of Olympus, or of ancient Egypt, or of Babylon. But no one of these hypotheses is more probable than any other: they lie outside the region of even probable knowledge, and therefore there is no reason to consider any of them. The fact that an opinion has been widely held is no evidence that it is not utterly absurd; indeed in view of the silliness of the majority of mankind, a widespread belief is more often likely to be foolish than sensible." Bertrand Russell, _A History of Western Philosophy_, 1945]
"To think that the ruler of the universe will run to my assistance and bend the laws of nature for me is the height of arrogance. That implies that everyone else (such as the opposing football team, driver, student, parent) is de-selected, unfavored by God, and that I am special,above it all." Dan Barker, Losing Faith in Faith: From Preacher to Atheist
"Faith is a cop-out. It is intellectual bankruptcy. If the only way you can accept an assertion is by faith, then you are conceding that it can't be taken on its own merits." Dan Barker
"Freethinkers reject faith as a valid tool of knowledge. Faith is the opposite of reason because reason imposes very strict limits on what can be true, and faith has no limits at all. A Great Escape into faith is no retreat to safety. It is nothing less than surrender." Dan Barker, Losing Faith in Faith: From Preacher to Atheist
The longer I have been an atheist, the more amazed I am that I ever believed Christian notions." Dan Barker, Losing Faith in Faith: From Preacher to Atheist