Permitting exceptions to occur when we are forming a habit is almost necessarily disturbing. The classical figure is that it is like letting fall a ball of string which we have been winding. It undoes in a moment all that we have accomplished in a long while. As Professor Bain has said it so much better than I could, I prefer to quote him: "The peculiarity of the moral habits, contradistinguishing them from the intellectual acquisitions, is the presence of two hostile powers, one to be gradually raised into the ascendant over the other. It is necessary, above all things, in such a situation never to lose a battle. Every gain on the wrong side undoes the effect of many conquests on the {52} right. The essential precaution, therefore, is so to regulate the two opposing powers that the one may have a series of uninterrupted successes, until repetition has fortified it to such a degree as to enable it to cope with the opposition under any circumstances." This means training the will by a series of difficult acts, accomplished in spite of the effort they require, but which gradually become easier from repeated performance until habit replaces nature and dominates the situation. Serious thinkers who faced humanity's problems squarely and devoted themselves to finding solutions for them had worked out this formula of the need of will training long ago, and it was indeed a principal characteristic of medieval education. The old monastic schools were founded on the idea that training of the will and the formation of good habits was ever so much more important than the accumulation of information. They frankly called the human will the highest faculty of mankind and felt that to neglect it would be a serious defect in education. The will can only be trained by the accomplishment of difficult things day after day until its energies are aroused and the man becomes conscious of his own powers and the {53} ability to use them whenever he really wishes. There was a time not so long since, and there are still voices raised to that purport, when it was the custom to scoff at the will training of the older time and above all the old-fashioned suggestion that mortifications of various kinds--that is, the doing of unpleasant things just for the sake of doing them--should be practiced because of the added will power thus acquired. The failure of our modern education which neglected this special attention to the will is now so patent as to make everyone feel that there must be a recurrence to old time ideas once more.