But the failure to understand that the true function of the introduction of empirical concepts is to divide the mass of historical facts and to regroup them conveniently for mnemonic purposes, has greatly interfered with the ideas of logicians as to the writing of history. Just as the individual judgment presupposes neither the empirical concept, nor the judgment of classification, nor the abstract concept, nor the judgment of enumeration, whereas all these forms presuppose just the individual judgment; so history does not presuppose classifications conducted from the practical point of view, or enumerations and statistics, whereas on the other hand all of these do presuppose history, and without it could not appear. We should not be deceived by finding them fused in historical works (which continually have recourse to such aids to memory), nor allow ourselves to forget that their function is _subservient,_ not _constitutive._ There can be no abstract idea of the Greek, unless we have first known the individual life of the men called Pericles and Alcibiades. Nor can there be any enumeration of the Three Hundred of Thermopylæ or of the Three Hundred of Cremera, except in so far as each was known in his individual features, and then classified as a citizen of Sparta or a Roman of the Fabian _gens._ To avail oneself of these simplifications is not to narrate history, which is already present to the spirit, but to fix it in the memory and to communicate it to others in an easier way. Those others, if they have not the capacity to recover the individual fact beneath those concepts of class and of number, will understand nothing of history, thus simplified and reduced to a skeleton for the purposes of communication. [Sidenote: _Hence comes also the claim to reduce history to a natural science;_] The positivist fiction that _history can be reduced to a science_ (natural science is of course meant) arises from the false interpretation of the subsidiary character of the pseudoconcepts in history and from making them a constitutive part of it. History, on this view, would be rendered a perfect example of what it has hitherto been only in imperfect outline, a classification and statistical table of reality. The many practical attempts at such a reduction have damaged contemporary historical writing not a little, by substituting colourless formulæ and empty abstractions which are applicable to several epochs at once or to all times, for the narration of individual reality. The same tendency appears in what is called _sociologism,_ and in its polemic against what it calls _psychological_ or _individual_ history, and in favour of _institutional_ or _social_ history. Against these materialistic reductions of history, the doctrines of _accident_ or of _little causes_ which upset the effects of _great_ causes, are efficacious and valuable, for these and suchlike absurdities have the merit of reducing that false reduction to absurdity.