I can make this comparison because my body is the only object of which I know not merely the one side, that of the idea, but also the other side which is called will.
Hori egin badezaket nire soina objektu bakarra delako da, zeinaren alde bakar bat ez ezik, errepresentazioarena, bigarrena ere, nahimen deitzen dena ezagut baitezaket.