Preview of upcoming review of World as Will and Representation
Schopenhauer’s term, the understanding, best understood in modern terms as brain function, or what the brain is for, what it does in its every day activity as a biological organ. The understanding is the faculty of the mind that produces and compares representations of perception.
Reason is the higher function that creates, stores and utilizes the abstract concepts, which makes thinking possible. However, the perception-attuned function of the brain is primary, in both the evolution of the species and the development of the individual. The lower functions of perception, or the understanding in the brain, work involuntary, in all animals, and independent of consciousness. For instance, all the concentration in the world can never raise consciousness to the level of biological functions such as hair growth, lymph glands manufacturing blood corpuscles, and regulate them. These functions are automatic, autonomous, and wholly inaccessible. Therefore, reason, while considered “higher,” is secondary in the greater scheme of things.
The moon appearing larger at the horizon, the apparent motion of the beach while sailing past it, and others are some of the many examples of perception that turns out to be an illusion - the deception of the understanding - yet the illusion remains entrenched because the understanding is distinct from reason. Perception is immediate in two ways: instantaneousness (time) and direct contact (space). The immediacy of time, at the level of perception, seems to not have taken any time at all, despite scientific knowledge that there is an elaborate process that actually takes time, and the immediacy of direct contact, there is no awareness of any perceptual apparatus being in the way between us and the object of perception. The understanding, because its knowledge already precedes reason, is also inaccessible to reason.
However, “if in the representation of perception illusion does at moments distort reality, then in the representation of the abstract error can reign for thousands of years, impose its iron yoke on whole nations, stifle the noblest impulses of mankind; through its slaves and dupes it can enchain even the man it cannot deceive.” (WWR, I §
Errors have a greater staying power, and the very possibility alone charges the history of abstract thought guilty of inertia.