“Beware the purists, the doctrinaires. It has been by the empirical method largely, by way of trial and error, that we have come so far. America itself is an experiment and we must bear that always in mind.” AmericaExperimentsTrial And ErrorEmpiricismPuristsDoctrinaires Book:The American Spirit: Who We Are and What We Stand For Source: The American Spirit: Who We Are and What We Stand For