In multiplying one three-place number by another I have the fixed habit of writing the multiplier under the multiplicand, the partial products under these, and the final product beneath all. If I reverse all these positions, the multiplying should be no more difficult, but as a matter of fact this simple reversal increases the time of operation about eighty-five per cent. All mathematical operations are rapid in proportion to the degree to which they are habitual. The speed of thought is slow unless it follows the old creases and the old grooves. No adequate speed is possible so long as attention must be given to the succeeding stages of the thought or act. This is true of all acts and <p 313> of all thoughts, whether in the home or upon the street, in the shop or in the office. Great speed of thought and action must not be confused with hurried thought and action. Speed which is habitual is never hurried. There are many acts of skill which can be done much more easily if performed rapidly than if performed slowly. When working hurriedly, there is a speeding up of all movements whether necessary or unnecessary; but the speed secured from correct habits is primarily dependent upon the elimination of useless movements and the concentration of energy at the essential point. HABIT INCREASES ACCURACY OF ACTING AND THINKING Where machinery can be employed we find greatly increased accuracy of work. The product of the loom and the lathe are more perfect, more uniform, and more accurate in all details than similar work produced by hand. The product of the printing press thus attains a greater degree of accuracy in details than <p 314> was ever attained by the ancient monk in the printing of his scrolls. In general, our work becomes accurate, as well as swift, in the degree to which we are able to mechanize it into habits. The beginner in piano playing or typewriting pays attention to the striking of each key. When he is in this stage of development he is liable at any time to strike the wrong key and certainly cannot be depended upon for regularity of touch. As soon as he has reduced the striking of the keys to a habit, he ceases to strike the wrong keys and secures uniformity of touch. The expert marksman has reduced to a habit the necessary steps of shooting and gives no special attention to the position of the fingers, the tension of the hands, the angle of the head, the closing of the eye, and the pulling of the trigger. He has reduced all these to habit before he is able to secure his expert skill.