Certain portions of knowledge, however, cannot be left as properly under our control when they have been translated into experience as described. Study has thus far brought the student only to the ability to use his knowledge with fair ease consciously, and extensive portions of knowledge have to be used quite unconsciously; they must not only become truly ours but they must become second nature to us. In all the trades, for example, the many facts about the use of materials and tools, etc., must be applied "without thinking" before skill is attained. The same holds in the fine arts. In grammar, knowledge of the rules must be carried over into habit before one's speech is safely grammatical. Knowledge of the political and moral truths contained in history and literature must likewise be converted into habit before proper conduct is assured. In learning how to study one must fall into the habit of associating ideas, weighing values, and carrying points, unconsciously, before the subject is properly mastered. "Ninety-nine hundredths, or, possibly, nine hundred and ninety-nine thousandths of our activity is purely automatic and habitual," says Professor James, "from our rising in the morning to our lying down each night. Our dressing and undressing, our eating and drinking, our greetings and partings, our hat-raisings and giving way for ladies to precede, nay, even most of the forms of our common speech, are things of a type so fixed by repetition as almost to be classed as reflex actions." [Footnote: James, Talks to Teachers, p. 65.] Professor James is here referring mainly to motor activity; but habit is evidently a large factor in all phases of life; and, while many of the valuable thoughts assimilated by study probably do not need to be applied unconsciously, it is safe to say that prominent portions of most branches of knowledge must be converted into habit, or become second nature, before we can be said to have reached the desirable endpoint in their pursuit.

The extent of this last advance, in which experience becomes habit, is indicated by the wide difference that exists between using a correct form of speech consciously and using it unconsciously, for even years of trial may intervene between the two. Repetition by use, under as nearly natural conditions as possible, must be the principal means of getting through this fourth step. But such practice should be influenced by certain very important precautions stated by Professor James. He has in mind primarily the formation of moral habits in his suggestions, but they apply in large measure also to the formation of other habits.

1. "In the acquisition of a new habit, or the leaving off of an old one, we must take care to launch ourselves with as strong and decided an initiative as possible. Accumulate all the possible circumstances which shall reinforce the right motives; put yourself assiduously in conditions that encourage the new way; make engagements incompatible with the old; take a public pledge, if the case allows; in short, envelop your resolution with every aid you know."

2. "Never suffer an exception to occur till the new habit is securely rooted in your life. Each lapse is like the letting fall of a ball of string which one is carefully winding up; a single slip undoes more than a great many turns will wind again."

3. "Seize the very first possible opportunity to act on every resolution you make, and on every emotional prompting you may experience in the direction of the habits you aspire to gain. It is not in the moment of their forming but in the moment of their producing motor effects, that resolves and aspirations communicate the new 'set' to the brain." [Footnote: James, Talks to Teachers, pp. 67-70. See also James, Psychology, Vol. I, Chapter IV, "Habit.">[

The time and labor necessary in real assimilation of knowledge.

It is evident that real assimilation of knowledge is a very complex process, requiring a great amount of time and labor. "And be assured, also," says Ruskin, "if the author is worth anything, you will not get at his meaning all at once—nay, that at his whole meaning you will not for a long time arrive, in any wise." [Footnote: Ruskin, Sesame and Lilies.] Ruskin is here doubtless referring mainly to insight into the thought; but, as has been shown, a point is not assimilated when one merely sees it clearly; insight into an idea usually precedes experience or ownership of it by a long interval; and the latter generally precedes habit by another long period.

We are familiar with these facts as applied to mechanical subject- matter, such as the multiplication tables and forms of discourse. We recognize that we must come back to these over and over again if we are to obtain automatic control over them. Yet we act as though there was ground for assuming that the more fertile ideas, which are to be reduced to habits of thought and conduct, require less energy and patience. There is no justification for any such assumption; it would seem more reasonable to expect to devote more time to the latter, rather than less.

Probably not much knowledge acquired either in school or college is carried through the three or four stages named above; but it is also true that comparatively little of that knowledge becomes a source of power, and it is safe to assume that the one fact is at least part explanation of the other. It is highly important, therefore, that the student become early reconciled to the fact that the real mastery of knowledge is a long and laborious process.

CHILDREN'S CAPACITY TO INCLUDE THE USE OF KNOWLEDGE AS A FACTOR IN THEIR STUDY