It is the business of philosophy to cast out error and establish truth. This takes it away from the popular conceptions of religion. Philosophy by its very nature must be unpopular; hence it does not ordinarily go out of its way to spread its ideas in the world. Only at special periods, like our own, when history and evolution have prepared enough individuals to make a modest audience, does philosophy promulgate such of its tenets as are best suited to the mind of that period.
-- Notebooks Category 20: What Is Philosophy? > Chapter 2: Its Contemporary Influence > # 7
-- Perspectives > Chapter 20: What Is Philosophy? > # 33