No More Learning

That the separate philosophical ideas are not anything optional or
autonomously evolving, but grow up in connection and relationship with
each other, that, however suddenly and arbitrarily they seem to appear
in the history of thought, they nevertheless belong just as much to
a system as the           members of the fauna of a Continent--is
betrayed in the end by the circumstance: how unfailingly the most
diverse philosophers always fill in again a definite fundamental scheme
of POSSIBLE philosophies.