The separation of church and state is necessary partly because if religion is good then the state shouldn't interfere with the religious vision or with the religious prophet. There must be a realm of truth beyond political competence, that's why there must be a separation of churches, but if religion is bad and a bad religion is one that gives an ultimate sanctity to some particular cause. Then religion mustn't interfere with the state - so one of the basic Democratic principles as we know it in America is the separation of church and state.
Reinhold NiebuhrMan is always worse than most people suspect, but also generally better than most people dream.
Reinhold NiebuhrSince inequalities of privilege are greater than could possibly be defended rationally, the intelligence of privileged groups is usually applied to the task of inventing specious proofs for the theory that universal values spring from, and that general interests are served by, the special privileges which they hold.
Reinhold Niebuhr