This insistence on the need for a close relationship of continuity between contemporary philosophy and the philosophy developed in the Christian tradition is intended to avert the danger which lies hidden in some currents of thought which are especially prevalent today. It is appropriate, I think, to review them, however briefly, in order to point out their errors and the consequent risks for philosophical work. They therefore run the risk of being unable to distinguish the part of truth of a given doctrine from elements of it which may be erroneous or ill-suited to the task at hand. An extreme form of eclecticism appears also in the rhetorical misuse of philosophical terms to which some theologians are given at times. The rigorous and far-reaching study of philosophical doctrines, their particular terminology and the context in which they arose, helps to overcome the danger of eclecticism and makes it possible to integrate them into theological discourse in a way appropriate to the task.
Eclecticism is an error of method, but lying hidden within it can also be the claims of historicism.
To understand a doctrine from the past correctly, it is necessary to set it within its proper historical and cultural context. The fundamental claim of historicism, however, is that the truth of a philosophy is determined on the basis of its appropriateness to a certain period and a certain historical purpose. At least implicitly, therefore, the enduring validity of truth is denied . What was true in one period, historicists claim, may not be true in another. Thus for them the history of thought becomes little more than an archeological resource useful for illustrating positions once held, but for the most part outmoded and meaningless now.