Instruments of the Mind

The source calls sensory organs instruments of the Mind and extends that designation to the brain and nervous system. It uses this relation to explain how information regarding external objects is obtained.

The following account compares the organs and their nervous systems with a delicate instrument fashioned by the mind to investigate the outside world. It then shifts to an image of the soul designing, manufacturing and using these instruments, making the spiritual premise explicit.

Instrument is a relationship in the book's model: an organ supplies a channel while the mind is presented as its user. That spiritual ownership metaphor is distinct from a biological explanation of how organs develop, and the catalogue does not treat it as an experimentally established mechanism.