And now let us pass on from these specialised influences of suggestion on certain kinds of attention to its influence on attention generally, as needed, for instance, in education. If we can arrest the shifting of the mental focus to undesired ideational centres in at all the same way as we can arrest the choreic or fidgety shiftings of motor impulse to undesired motor centres, we shall have done perhaps as much for the world's ordinary work as if we had raised the average man's actual intelligence a step higher in the scale. We shall have checked waste, although we may not have improved quality. The well-known case of Dr. Forel's warders,[87] who were enabled by hypnotic suggestion to sleep soundly by the side of the patients they had to watch, and wake only when the patients required to be restrained, shows us how by this means the attention may be concentrated on selected impressions and waste of energy be avoided in a way that could hardly be compassed by any ordinary exercise of the will. How far, indeed, we can go in actually _heightening_ intelligence by suggestion we have yet to learn. We must not expect to add a cubit to intellectual any more than to physical stature. Limitations at birth must prevent our developing the common man into a Newton; but there seems no reason why we should not bring up his practical achievements much nearer than at present to the maximum of his innate capacity.[88] In passing on from the influence of suggestion on _attention_ to its influence on _will_, I am not meaning to draw any but the most every-day distinction between these two forms of inward concentration. The point, in fact, which I wish now to notice is rather a matter of common observation than a provable and measurable phenomenon. I speak of the energy and resolution with which a hypnotic suggestion is carried out;--the _ferocity_, even, with which the entranced subject pushes aside the opposition of much more powerful men. I do not, indeed, assert that he would thus risk very serious injury; for I believe (with Bramwell and others) that there does exist somewhere within him a knowledge that the whole proceeding is a mere experiment. But, nevertheless, he actually risks something; he behaves, in short, as a confident, resolute man would behave, and this however timid and unaggressive his habitual character may be. I believe that much advantage may yet be drawn from this confident temper. We can thus inhibit the acquired self-distrust and shyness of the supraliminal self, and get the subliminal self concentrated upon some task which may be as difficult as we please;--which may, if we can adjust it rightly, draw out to the uttermost the innate powers of man.