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It was founded on Judeo-Christian philosophy.

He was wrong. Read the Declaration of Independence. God is mentioned four times in the Declaration of Independence: Perhaps Adams should have read it.

Our Constitution was made only for a moral and religious people. It is wholly inadequate to the government of any other.
John Adams

This is true; and it is history. Once again the Political Left has practiced cherry-picking without taking into account that Conservatives practice both research and honesty.

I have examined all religions, and the result is that the Bible is the best book in the world.
John Adams