Manual training has recently been suggested as one of the means of combating the criminal tendency in the young, and this suggestion is being received with increasing favor. But until now the theory of manual training has hardly begun to be worked out. The confidence which is expressed in it is based, for the most part, on unclassified experience. But experience without theory is altogether insufficient. Theory, it is true, without experience is without feet to stand. But experience without the guiding and directing help of theory is without eyes to see. I shall now offer, in a somewhat tentative way, a few remarks intended to be a contribution to the philosophy of manual training as applied to the reformation of delinquent children. I shall confine myself, however, to one type of criminality in children--a not uncommon type--that of moral deterioration arising from weakness of the will. In the first place, let us distinguish between feeling, desiring, and willing. A person who is without food feels hunger. A person who, being hungry, calls up in his mind images of food, will experience a desire. A person who adopts means to obtain food performs an act of the will. A Russian prisoner in Siberia who suffers from the restraints of confinement is in a state of feeling. The same person, when he recalls images of home and friends, is in a state of desire; but when he sets about adopting the means to effect his escape, concerts signals with his fellow-prisoners, undermines the walls of his dungeon, etc., he is performing acts of the will. Permit me to call particular attention to the fact that the will is characterized at its birth by the intellectual factor which enters into it; for the calculation of means to ends is an intellectual process, and every conscious act of volition involves such a process. If the will is thus characterized at its birth, we can at once anticipate the conclusion that any will will be strong in proportion as the intellectual factor in it predominates. It was said by one of the speakers that "an ounce of affection is better than a ton of intellect." Give me a proper mixture of the two. Give me at least an ounce of intellect together with an ounce of affection. There is great danger lest we exaggerate the importance of the emotions for morality. The opinion is widely entertained that good feeling, kind feeling, loving feeling, is the whole of morality, or, at least, the essential factor in it. But this opinion is surely erroneous. The will may be compared to the power which propels a ship through the waves. Feeling is the rudder. The intellect is the helmsman.