Full Idea
It is not possible to base a popular culture on philosophy. Thus, with regard to culture, philosophy never can have primary, but always only secondary, significance.
Gist of Idea
Philosophy is always secondary, because it cannot support a popular culture
Source
Friedrich Nietzsche (Unpublished Notebooks 1872-74 [1873], 23 [14])
Book Reference
Nietzsche,Friedrich: 'Unpublished of 'Unfashionable Obs' period (v 11)', ed/tr. Gray,Richard T. [Stanford 1995], p.119
A Reaction
It is the brilliance of Christianity as a set of ideas that it is simple enough to found a popular culture. A complex theology would make that impossible. Luther brought it back to its roots, when the priesthood lost touch with the people.