[JGB-20]
That the separate philosophical ideas are not anything...
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 collective 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. Under an invisible spell, they always revolve once more in the same orbit, however independent of each other they may feel themselves with their critical or systematic wills, something within them leads them, something impels them in definite order the one after the other--to wit, the innate methodology and relationship of their ideas. Their thinking is, in fact, far less a discovery than a re-recognizing, a remembering, a return and a home-coming to a far-off, ancient common-household of the soul, out of which those ideas formerly grew: philosophizing is so far a kind of atavism of the highest order. The wonderful family resemblance of all Indian, Greek, and German philosophizing is easily enough explained. In fact, where there is affinity of language, owing to the common philosophy of grammar--I mean owing to the unconscious domination and guidance of similar grammatical functions--it cannot but be that everything is prepared at the outset for a similar development and succession of philosophical systems, just as the way seems barred against certain other possibilities of world-interpretation. It is highly probable that philosophers within the domain of the Ural-Altaic languages (where the conception of the subject is least developed) look otherwise "into the world," and will be found on paths of thought different from those of the Indo-Germans and Mussulmans, the spell of certain grammatical functions is ultimately also the spell of PHYSIOLOGICAL valuations and racial conditions.--So much by way of rejecting Locke's superficiality with regard to the origin of ideas.