|"Of all the animosities which have existed among mankind, those which are caused by difference of sentiments in religion appear to be the most inveterate and distressing, and ought most to be deprecated. I was in hopes that the enlightened and liberal policy, which has marked the present age, would at least have reconciled Christians of every denomination so far that we should never again see the religious disputes carried to such a pitch as to endanger the peace of society." – George Washington|
The inherent irrationality in much religious logic (or "faith-based reasoning") often leads to conflict between those who are religious and those who are not, as well as (though less often, due to the relative homogeneity of religious extremism in the US) between those of differing doctrines.
- religious control of the US military
- The Pledge of Allegiance
- Separation of church and state#United States