(2) The criticism of a document is not to be performed en bloc. The rule will be to analyse the document into its elements, in order to isolate the different statements of which it is composed and to examine each of them separately. Sometimes a single sentence contains several statements; they must be separated and criticised one by one. In a sale, for example, we distinguish the date, the place, the vendor, the purchaser, the object, the price, and each one of the conditions.

In practice, criticism and analysis are performed simultaneously, and, except in the case of texts in a difficult language, may proceed pari passu with interpretative analysis and criticism. As soon as we understand a phrase we analyse it and criticise each of its elements.

It thus appears that logically criticism comprises an enormous number of operations. In describing them, with all the details necessary for the understanding of their mechanism and the reasons for their employment, we are likely to give the impression of a procedure too slow to be practicable. Such an impression is inevitably produced by every verbal description of a complicated process. Compare the time occupied in describing a movement in fencing with that required to execute it; compare the tedium of the grammar and dictionary with the rapidity of reading. Like every practical art, criticism consists in the habit of performing certain acts. In the period of apprenticeship, before the habit is acquired, we are obliged to think of each act separately before performing it, and to analyse the movements; accordingly we perform them all slowly and with difficulty; but the habit once acquired, the acts, which have now become instinctive and unconscious, are performed with ease and rapidity. The reader must therefore not be uneasy about the slowness of the critical processes; he will see later on how they are abridged in practice.

III. The problem of criticism may be stated as follows. Given a statement made by a man of whose mental operations we have no experience, and the value of the statement depending exclusively on the manner in which these operations were performed; to ascertain whether these operations were performed correctly. The mere statement of the problem shows that we cannot hope for any direct or definitive solution of it; we lack the essential datum, namely, the manner in which the author performed the mental operations concerned. Criticism therefore does not advance beyond indirect and provisional solutions, and does no more than furnish data which require a final elaboration.

A natural instinct leads us to judge of the value of statements by their form. We think we can tell at a glance whether an author is sincere or a narrative accurate. We seek for what is called "the accent of sincerity," or "an impression of truth." This impression is almost irresistible, but it is none the less an illusion. There is no external criterion either of good faith or of accuracy. "The accent of sincerity" is the appearance of conviction; an orator, an actor, an habitual liar will put more of it into his lies than an undecided man into his statement of what he believes to be the truth. Energy of affirmation does not always mean strength of conviction, but sometimes only cleverness or effrontery.[147] Similarly, abundance and precision of detail, though they produce a vivid impression on unexperienced readers, do not guarantee the accuracy of the facts;[148] they give us no information about anything but the imagination of the author when he is sincere, or his impudence when he is the reverse. We are apt to say of a circumstantial narrative: "Things of this kind are not invented." They are not invented, but they are very easy to transfer from one person, country, or time to another. There is thus no external characteristic of a document which can relieve us of the obligation to criticise it.

The value of an author's statement depends solely on the conditions under which he performed certain mental operations. Criticism has no other resource than the examination of these conditions. But it is not a case of reconstructing all of them; it is enough to answer a single question: did the author perform these operations correctly or not? The question may be approached on two sides.

(1) The critical investigation of authorship has often taught us the general conditions under which the author operated. It is probable that some of these influenced each one of the operations. We ought therefore to begin by studying the information we possess about the author and the composition of the document, taking particular pains to look in the habits, sentiments, and personal situation of the author, or in the circumstances in which he composed, for all the reasons which could have existed for incorrectness on the one hand, or exceptional accuracy on the other. In order to perceive these reasons it is necessary to be on the lookout for them beforehand. The only method, therefore, is to draw up a general set of questions having reference to the possible causes of inaccuracy. We shall then apply it to the general conditions under which the document was composed, in order to discover those causes which may have rendered the author's mental operations incorrect and vitiated the results. But all that we shall thus obtain—even in the exceptionally favourable cases in which the conditions of origin are well known—will be general indications, which will be insufficient for the purposes of criticism, for criticism must always deal with each separate statement.

(2) The criticism of particular statements is confined to the use of a single method, which, by a curious paradox, is the study of the universal conditions under which documents are composed. The information which is not furnished by the general study of the author may be sought for by a consideration of the necessary processes of the human mind; for, since these are universal, they must appear in each particular case. We know what are the cases in which men in general are inclined to alter or distort facts. What we have to do in the case of each statement is to examine whether it was made under such circumstances as to lead us to suspect, from our knowledge of the habits of normal humanity, that the operations implied in the making of it were incorrectly performed. The practical procedure will be to draw up a set of questions relating to the habitual causes of inaccuracy.

The whole of criticism thus reduces to the drawing up and answering of two sets of questions: one for the purpose of bringing before our minds those general conditions affecting the composition of the document, from which we may deduce general motives for distrust or confidence; the other for the purpose of realising the special conditions of each statement, from which special motives may be drawn for distrust or confidence. These two sets of questions ought to be drawn up beforehand in such a form as may enable us to examine methodically both the document in general and each statement in particular; and as they are the same for all documents, it is useful to formulate them once for all.

IV. The critical process comprises two series of questions, which correspond to the two series of operations by which the document was produced. All that interpretative criticism tells us is what the author meant; it remains to determine (1) what he really believed, for he may not have been sincere; (2) what he really knew, for he may have been mistaken. We may therefore distinguish a critical examination of the author's good faith, by which we seek to determine whether the author of the document lied or not, and a critical examination of his accuracy, by which we seek to determine whether he was or was not mistaken.