Founding Fathers Anti Religion Quotes by George Washington, James Madison, Thomas Jefferson, Thomas Paine, John Adams, Benjamin Franklin and many others.

Let us with Caution indulge the supposition that morality can be maintained without religion.
And I have no doubt that every new example will succeed, as every past one has done, in showing that religion and Government will both exist in greater purity, the less they are mixed together.
I am for freedom of religion, and against all maneuvers to bring about a legal ascendency of one sect over another.
Who does not see that the same authority which can establish Christianity, in exclusion of all other Religions, may establish with the same ease any particular sect of Christians, in exclusion of all other Sects?
Of all the tyrannies that affect mankind, tyranny in religion is the worst.
I have examined all religions, and the result is that the Bible is the best book in the world.
All national institutions of churches, whether Jewish, Christian or Turkish, appear to me no other than human inventions, set up to terrify and enslave mankind, and monopolize power and profit.
The legitimate powers of government extend to such acts only as are injurious to others.
It is our boast, that a man’s religious tenets will not forfeit the protection of the Laws.
Because we hold it for ‘a fundamental and undeniable truth’, that religion or ‘the duty which we owe to our Creator’ and the manner of discharging it, can be directed only by reason and conviction, not by force or violence.
…It would be more consistent that we call [the Bible] the work of a demon than the word of God. It is a history of wickedness that has served to corrupt and brutalize mankind.
The office of reformer of the superstitions of a nation is ever dangerous.
It does me no injury for my neighbor to say there are twenty gods or no God.
Fix reason firmly in her seat, and call on her tribunal for every fact, every opinion. Question with boldness even the existence of a God
… happily the Government of the United States… gives to bigotry no sanction, to persecution no assistance.
The government of the United States of America has in itself no character of enmity against the laws, religion or tranquility of Muslims.
In every country and in every age, the priest has been hostile to liberty.