[Sidenote: _Didactic divisions and other reasons for the apparent duality._] Philosophy and history are distinguished, as we know, for didactic purposes, philosophy being that form of exposition in which special emphasis is accorded to the concept or system, and history as that form in which the individual judgment or narrative is specially prominent. But from the very fact that the narrative includes the concept, every narrative clarifies and solves philosophic problems. On the other hand, every system of concepts throws light upon the facts which are before the spirit. The confirmation of the value of a system resides in the power of interpreting and narrating history, which it displays. It is history which is the touchstone of philosophy. It is true that the two may appear to be different, owing to the external differences of books, in which only one of the two seems to be treated: and it is also true that the didactic division is based upon a diversity of aptitudes, which practice contributes to develop. But, provided always that the meaning both of a philosophic proposition and of a historical proposition is fathomed to the bottom, their intrinsic unity is indubitable. The fact that is so often cited of conflicts between philosophy and history is in reality a conflict between two philosophies, the one true and the other false, or both partly true and partly false. Some thinkers, for instance, are idealist in recounting history and materialist in their philosophic systems. This means that two philosophies are at strife within them without either being sufficiently aware of it. And does it not also happen that we find in a philosophic exposition propositions that contradict one another and divergent systems capriciously associated in one system? From intuition, which is indiscriminate individualization, we rise to the universal, which is discriminate individualization, from art to philosophy, which is history. The second stage, precisely because it is second, is more complex than the first, but this does not imply that it is, as it were, split into two lesser degrees, philosophy _and_ history. The concept, with one stroke of the wing, affirms itself and takes possession of the whole of reality, which is not different from it, but is itself.