106 THE DOCTRINE OF ENERGY 



The form, therefore, of the phenomenon, in the 

 language of Kant, is constituted by the transmuta- 

 tions of the Energy immediately related to con- 

 sciousness ; the matter of the phenomenon is con- 

 stituted by the varieties produced in these by the 

 transmitted transmutations from the Energy be- 

 yond just as the musician may produce a constant 

 variety of harmonies upon his instrument, but all 

 must be conditioned by the relations fixed and estab- 

 lished between the notes of which the instrument 

 is composed. Transmutations of the cerebral Energy 

 may be stimulated not only from without, but by 

 subjective impulse from within ; but in either case 

 the laws of these transmutations are the necessary 

 form of experience, and it is the possibility of trans- 

 mutation upon an internal and subjective impulse 

 which makes possible the formation of synthetical 

 judgments a priori. It is as if the organ were not 

 only responsive to impressions upon its keyboard 

 from without, but were also automotive and could 

 originate harmonies in its own notes ; and as if, 

 moreover, it were endowed with consciousness so as 

 to receive an intuition of both classes of music. 

 The former would correspond to sensations, the 

 latter to ideas ; and we might imagine such an in- 

 strument by presenting to itself its own system of 

 notes, contriving thus to frame a priori a syn- 



