Quote from : Dune Messiah Book

Government cannot be religious and self-assertive at the same time. Religious experience needs a spontaneity which laws inevitably suppress. And you cannot govern without laws. Your laws eventually must replace morality, replace conscience, replace even the religion by which you think to govern. Sacred ritual must spring from praise and holy yearnings which hammer out a significant morality. Government, on the other hand, is a cultural organism particularly attractive to doubts, questions and contentions. I see the day coming when ceremony must take the place of faith and symbolism replaces morality.