Then to hell with the logical law of noncontradiction.
We are both a Christian and a non-Christian nation.
"Many including myself, believe God's hand was involved in the founding and development of our great nation."
-Gipper
"Had the Founders been atheists, it is very unlikely America would have ever existed or ever achieved greatness.
Thanks be to God."
-Gipper
Vs.
"As the Government of the United States of America is not, in any sense, founded on the Christian religion..."
-John Adams
Two contradictory attitudes one of them must be wrong.
There is no contradiction. Both of Gippers quotes refer to the nation we live in and Adam's quote refers to the federal government.
Nation refers to the character of the people even while they establish a secular government.
You can see how Adams differentiated the people from the government in these quotes:
"We have no government armed with power capable of contending with human passions unbridled by morality and religion. Avarice, ambition, revenge, or gallantry, would break the strongest cords of our Constitution as a whale goes through a net. Our Constitution was made only for a moral and religious people. It is wholly inadequate to the government of any other." --October 11, 1798
And
"The right of a nation to kill a tyrant in case of necessity can no more be doubted than to hang a robber, or kill a flea."
Notice that it is the people who are killing the tyrant and not the government -as surely the government would be controlled by said tyrant and would not kill him.
So, did Adams think the NATION was founded on Christian principles?
“ The general principles upon which the Fathers achieved independence were the general principals of Christianity… I will avow that I believed and now believe that those general principles of Christianity are as eternal and immutable as the existence and attributes of God.” Adams
And did he think that it would be like it is if it were not for Christianity?
"Without Religion this World would be Something not fit to be mentioned in polite Company, I mean Hell." Adams