surely as universal distrust would make progress impossible. One useful rule, at any rate, may be stated, as follows: The works of historians should be read with the same critical precautions which are observed in the reading of documents. A natural instinct impels us to look principally for the conclusions, and to accept them as so much established truth; we ought, on the contrary, to be continually applying analysis, we ought to look for the facts, the proofs, the fragments of documents—in short, the materials. We shall be doing the author's work over again, but we shall do it very much faster than he did, for that which takes up time is the collection and combination of the materials; and we shall accept no conclusions but those we consider to have been proved.
CHAPTER II
THE GROUPING OF FACTS
I. The prime necessity for the historian, when confronted with the chaos of historical facts, is to limit the field of his researches. In the ocean of universal history what facts is he to choose for collection? Secondly, in the mass of facts so chosen he will have to distinguish between different groups and make subdivisions. Lastly, within each of these subdivisions he will have to arrange the facts one by one. Thus all historical construction should begin with the search for a principle to guide in the selection, the grouping, and the arrangement of facts. This principle may be sought either in the external conditions of the facts or in their intrinsic nature.
The simplest and easiest mode of classification is that which is founded on external conditions. Every historical fact belongs to a definite time and a definite place, and relates to a definite man or