attribute of the idea actually coincides with an attribute of the object conceived, although psychology warns us of confusions of this sort.
I obtain an idea of a definite coarse movement by performing this motion or by imitating it, and in so doing I set a standard for this motion in my feelings of innervation.[1]
Now if I perceive a similar more or less coarse motion in some one else, the surest way to the understanding—to apperception—of the same is to carry it out imitatively and the comparison will then enable me to decide in which motion I expended more energy. Such an impulse to imitate certainly arises on perceiving a movement. But in reality I do not carry out the imitation any more than I still spell out words simply because I have learnt to read by means of spelling. Instead of imitating the movement by my muscles I substitute the idea of the same through my memory traces of the expenditures necessary for similar motions. Perceiving, or “thinking,” differs above all from
- ↑ The recollection of this innervation expenditure will remain the essential part of the idea of this motion, and there will always be methods of thought in my psychic life in which the idea will be represented by nothing else than this expenditure. In other connections a substitute for this element may possibly be put in the form of other ideas, for instance the visual idea of the object of the motion, or it may be put in the form of the word-idea; and in certain types of abstract thought a sign instead of the full content itself may suffice.
