@maxdancona,
Before Darwin came along and explained how animal life in it many forms could exist without an intelligent agent it was hard for anyone to be an out and out atheist.
With that said there was at least Deists that if they could had read "On the Origin of Species" would had in all likelihood had been out and out atheists.
Jefferson our third president come to mind in that regard.
Of course as time went by and a higher percent of the unwashed masses could and did vote and the electoral college no longer acted as a buffer it became harder and harder not to at least give lip service to religion and a god.
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