Just As it is, I believe, a legitimate philosophical enterprise to engage in a “rational reconstruction” of some term or concept in ordinary language, which will, although similar in many ways to the original concept, be a better concept than the original, in that it will, among other things, be free of ambiguities, vagueness and philosophically irrelevant associations of the parent concept, so there is, I believe, a similar enterprise in the history of philosophy. Here, it is legitimate to reconstruct a philosopher's views about some matter the philosopher has written on in such a way as to defend it from certain criticisms so long as the reconstruction remains faithful to the main thrust of the views in question. In particular this is so when the philosopher is acknowledged to be a very great and influential one, and if the criticisms, were they correct, would be inconsistent with the philosopher's acknowledged greatness. The defence of the philosopher from such criticisms is even more legitimate if it can be shown that although the philosopher has written in places in a way that makes the criticism in question seem correct, he has written elsewhere in a way which makes the criticism seem mistaken.