The worst product of striving to do things with defective psychic impulsion is fatigue in its common forms, which slows down the pace, multiplies errors and inaccuracies, and develops slovenly habits, ennui, flitting will specters, velleities and caprices, and neurasthenic symptoms generally. It brings restlessness, and a tendency to many little heterogeneous, smattering efforts that weaken the will and leave the mind like a piece of well-used blotting paper, covered with traces and nothing legible. All beginnings are easy, and only as we leave the early stages of proficiency behind and press on in either physical or mental culture and encounter difficulties, do individual differences and the tendency of weak will, to change and turn to something else increase. Perhaps the greatest disparity between men is the power to make a long concentrative, persevering effort, for _In der Beschränkung zeigt sich der Meister_ [The master shows himself in limitation]. Now no kind or line of culture is complete till it issues in motor habits, and makes a well-knit soul texture that admits concentration series in many directions and that can bring all its resources to bear at any point. The brain unorganized by training has, to recur to Richter's well-worn aphorism, saltpeter, sulfur, and charcoal, or all the ingredients of gunpowder, but never makes a grain of it because they never get together. Thus willed action is the language of complete men and the goal of education. When things are mechanized by right habituation, there is still further gain; for not only is the mind freed for further and higher work, but this deepest stratum of motor association is a plexus that determines not only conduct and character, but even beliefs. The person who deliberates is lost, if the intellect that doubts and weighs alternatives is less completely organised than habits. All will culture is intensive and should safeguard us against the chance influence of life and the insidious danger of great ideas in small and feeble minds. Now fatigue, personal and perhaps racial, is just what arrests in the incomplete and mere memory or noetic stage. It makes weak bodies that command, and not strong ones that obey. It divorces knowing and doing, _Kennen_ and _Können_, a separation which the Greeks could not conceive because for them knowledge ended in skill or was exemplified in precepts and proverbs that were so clear cut that the pain of violating them was poignant. Ideas must be long worked over till life speaks as with the rifle and not with the shotgun, and still less with the water hose. The purest thought, if true, is only action repressed to be ripened to more practical form. Not only do muscles come before mind, will before intelligence, and sound ideas rest on a motor basis, but all really useless knowledge tends to be eliminated as error or superstition. The roots of play lie close to those of creative imagination and idealism.